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太阳能技术对我国未来减排CO<sub>2sub> 的贡献

赵玉文

《中国工程科学》 2003年 第5卷 第4期   页码 38-40

摘要:

在“我国后续能源发展战略研究”基础上对太阳能技术在我国未来减排CO<sub>2sub>中的作用进行了估计,结果表明,在2010年后太阳能技术对CO<sub>2sub

关键词: 太阳能,CO2减排    

ZnFe<sub>2sub>O<sub>4sub> deposited on BiOCl with exposed (001) and (010) facets for photocatalyticreduction of CO<sub>2sub> in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

《化学科学与工程前沿(英文)》 2017年 第11卷 第2期   页码 197-204 doi: 10.1007/s11705-016-1606-y

摘要: ZnFe O -BiOCl composites were prepared by both hydrothermal and direct precipitation processes and the structures and properties of the samples were characterized by various instrumental techniques. The samples were then used as catalysts for the photocatalytic reduction of CO in cyclohexanol under ultraviolet irradiation to give cyclohexanone (CH) and cyclohexyl formate (CF). The photocatalytic CO reduction activities over the hydrothermally prepared ZnFe O -BiOCl composites were higher than those over the directly-precipitated composites. This is because compared to the direct-precipitation sample, the ZnFe O nanoparticles in the hydrothermal sample were smaller and more uniformly distributed on the surface of BiOCl and so more heterojunctions were formed. Higher CF and CH yields were obtained for the pure BiOCl and BiOCl composite samples with more exposed (001) facets than for the samples with more exposed (010) facets. This is due to the higher density of oxygen atoms in the exposed (001) facets, which creates more oxygen vacancies, and thereby improves the separation efficiency of the electron-hole pairs. More importantly, irradiation of the (001) facets with ultraviolet light produces photo-generated electrons which is helpful for the reduction of CO to ·CO . The mechanism for the photocatalytic reduction of CO in cyclohexanol over ZnFe O -BiOCl composites with exposed (001) facets involves electron transfer and carbon radical formation.

关键词: reduction of CO2     cyclohexanol     ZnFe2O4 deposited BiOCl     facet     composite photocatalyst    

Does environmental infrastructure investment contribute to emissions reduction? A case of China

Xiaoqian SONG, Yong GENG, Ke LI, Xi ZHANG, Fei WU, Hengyu PAN, Yiqing ZHANG

《能源前沿(英文)》 2020年 第14卷 第1期   页码 57-70 doi: 10.1007/s11708-019-0654-7

摘要: Environmental infrastructure investment (EII) is an important environmental policy instrument on responding to greenhouse gas (GHG) emission and air pollution. This paper employs an improved stochastic impact by regression on population, affluence and technology (STRIPAT) model by using panel data from 30 Chinese provinces and municipalities for the period of 2003–2015 to investigate the effect of EII on CO emissions, SO emissions, and PM pollution. The results indicate that EII has a positive and significant effect on mitigating CO emission. However, the effect of EII on SO emission fluctuated although it still contributes to the reduction of PM pollution through technology innovations. Energy intensity has the largest impact on GHG emissions and air pollution, followed by GDP per capita and industrial structure. In addition, the effect of EII on environmental issues varies in different regions. Such findings suggest that policies on EII should be region-specific so that more appropriate mitigation policies can be raised by considering the local realities.

关键词: environmental infrastructure investment (EII)     CO2 emission     SO2 emission     PM2.5 pollution     stochastic impact by regression on population     affluence and technology (STIRPAT) model     governance    

Reduction potential of the energy penalty for CO capture in CCS

《能源前沿(英文)》 2023年 第17卷 第3期   页码 390-399 doi: 10.1007/s11708-023-0864-x

摘要: CO2 capture and storage (CCS) has been acknowledged as an essential part of a portfolio of technologies that are required to achieve cost-effective long-term CO2 mitigation. However, the development progress of CCS technologies is far behind the targets set by roadmaps, and engineering practices do not lead to commercial deployment. One of the crucial reasons for this delay lies in the unaffordable penalty caused by CO2 capture, even though the technology has been commonly recognized as achievable. From the aspects of separation and capture technology innovation, the potential and promising direction for solving this problem were analyzed, and correspondingly, the possible path for deployment of CCS in China was discussed. Under the carbon neutral target recently proposed by the Chinese government, the role of CCS and the key milestones for deployment were indicated.

关键词: CO2 capture and storage (CCS)     CO2 separation     energy penalty    

以净零排放为目标的封存驱动型CO<sub>2sub>提高采收率方法 Article

刘月亮, 芮振华

《工程(英文)》 2022年 第18卷 第11期   页码 79-87 doi: 10.1016/j.eng.2022.02.010

摘要: 可通过驱油过程将CO<sub>2sub>封存在油藏地质体中,因此,CO<sub>2sub>驱油与封存被视为降低CO<sub>2sub>排放的重要手段之一。本研究提出了一种新型的CO<sub>2sub>提高采收率(EOR)方法,即封存驱动型CO<sub>2sub>提高采收率,其主要目标是通过在油藏中封存尽可能多的CO<sub>2sub>来实现CO结果表明,DME可提高CO<sub>2sub>在原油中的溶解度,有利于CO<sub>2sub>的溶解封存;可抑制因CO<sub>2sub>的抽提作用造成的原油轻质组分“逃逸&rdquo封存驱动型CO<sub>2sub> EOR方法在提高波及效率方面优于传统的CO<sub>2sub> EOR,尤其是在采油后期更为明显;同时,封存驱动型CO<sub>2sub> EOR比传统的此外,通过封存驱动型CO<sub>2sub> EOR封存的CO<sub>2sub>量远超采出原油燃烧产生的碳排放总量。

关键词: CO<sub>2sub> EOR     CO<sub>2sub>净排放量     二甲醚     封存驱动型CO<sub>2sub> EOR     CO<sub>2sub>封存    

China’s pre-2020 CO

Hailin WANG

《能源前沿(英文)》 2019年 第13卷 第3期   页码 571-578 doi: 10.1007/s11708-019-0640-0

摘要: China achieved the reduction of CO intensity of GDP by 45% compared with 2005 at the end of 2017, realizing the commitment at 2009 Copenhagen Conference on emissions reduction 3 years ahead of time. In future implementation of the “13th Five-Year Plan (FYP),” with the decline of economic growth rate, decrease of energy consumption elasticity and optimization of energy structure, the CO intensity of GDP will still have the potential for decreasing before 2020. By applying KAYA Formula decomposition, this paper makes the historical statistics of the GDP energy intensity decrease and CO intensity of energy consumption since 2005, and simulates the decrease of CO intensity of GDP in 2020 and its influences on achieving National Determined Contribution (NDC) target in 2030 with scenario analysis. The results show that China’s CO intensity of GDP in 2020 is expected to fall by 52.9%–54.4% than the 2005 level, and will be 22.9%–25.4% lower than 2015. Therefore, it is likely to overfulfill the decrease of CO intensity of GDP by 18% proposed in the 13th FYP period. Furthermore, the emission reduction potentiality before 2020 will be conducive to the earlier realization of NDC objectives in 2030. China’s CO intensity of GDP in 2030 will fall by over 70% than that in 2005, and CO emissions peak will appear before 2030 as early as possible. To accelerate the transition to a low-carbon economy, China needs to make better use of the carbon market, and guide the whole society with carbon price to reduce emissions effectively. At the same time, China should also study the synergy of policy package so as to achieve the target of emission reduction.

关键词: China’s National Determined Contribution     emission reduction potential     scenario analysis     CO2 emissions peak    

Reducing CO emissions from the rebalancing operation of the bike-sharing system in Beijing

《工程管理前沿(英文)》 2023年 第10卷 第2期   页码 262-284 doi: 10.1007/s42524-021-0168-y

摘要: With the development of the bike-sharing system (BSS) and the introduction of green and low carbon development, the environmental impacts of BSS had received increasing attention in recent years. However, the emissions from the rebalancing of BSS, where fossil-fueled vehicles are commonly used, are usually neglected, which goes against the idea of green travel in a sharing economy. Previous studies on the bike-sharing rebalancing problem (BRP), which is considered NP-hard, have mainly focused on algorithm innovation instead of improving the solution model, thereby hindering the application of many existing models in large-scale BRP. This study then proposes a method for optimizing the CO2 emissions from BRP and takes the BSS of Beijing as a demonstration. We initially analyze the spatial and temporal characteristics of BSS, especially the flow between districts, and find that each district can be independently rebalanced. Afterward, we develop a rebalancing optimization model based on a partitioning strategy to avoid deciding the number of bikes being loaded or unloaded at each parking node. We then employ the tabu search algorithm to solve the model. Results show that (i) due to over launch and lack of planning in rebalancing, the BSS in Beijing shows great potential for optimization, such as by reducing the number of vehicle routes, CO2 emissions, and unmet demands; (ii) the CO2 emissions of BSS in Beijing can be reduced by 57.5% by forming balanced parking nodes at the end of the day and decreasing the repetition of vehicle routes and the loads of vehicles; and (iii) the launch amounts of bikes in specific districts, such as Shijingshan and Mentougou, should be increased.

关键词: bike-sharing     CO2 emissions     environmental benefit     partitioning strategy     rebalancing problem    

Greenhouse gas emissions during co-composting of cattle feedlot manure with construction and demolition

Xiying Hao, Francis J. Larney

《环境科学与工程前沿(英文)》 2017年 第11卷 第3期 doi: 10.1007/s11783-017-0955-1

摘要: Manure management strategies should reflect current animal feeding practices and encourage recycling of organic waste to help protect our environment. This research investigated greenhouse gas (GHG) emissions during cattle manure stockpiling or composting with and without construction and demolition (C&D) waste. Manure was collected from cattle fed a typical finishing diet (CK manure) and from cattle on diets which included 30% dried distillers grains with solubles (DG manure). The CK and DG manures were co-composted with (4:1) C&D waste (treatments: CK_CD DG_CD), composted alone (treatments: CK and DG) in 13 m bins or stockpiled without C&D waste (treatments: CK_ST and DG_ST) for 99 days. Manure type (CK vs. DG manure) had no effect on GHG emissions over the 99 day manure composting or stockpiling. Composting with C&D waste produced similar CO emissions, about double that from manure stockpiling (7.0 kgC·m ). In contrast, CH emissions were reduced by the inclusion of C&D waste (64 gC·m with C&D vs. 244 gC·m without C&D) while the manure stockpile emitted the greatest amount of CH (464 gC·m ). Additionally, only 0.48% of C was emitted in CH form with C&D waste, compared to 1.68% when composting without C&D waste and 7.00% when cattle manure was stockpiled. The N O emissions (12.4 to 18.0 gN·m ) were similar across all treatments. The lower CH emissions with C&D waste are beneficial in reducing overall GHG emissions from manure composting, while reducing the amount of material entering landfills.

关键词: Livestock manure     greenhouse gas flux     straw bale compost bin     N2O     CH4     CO2    

Decomposition analysis applied to energy and emissions: A literature review

《工程管理前沿(英文)》   页码 625-639 doi: 10.1007/s42524-023-0270-4

摘要: Decomposition analysis has been widely used to assess the determinants of energy and CO2 emissions in academic research and policy studies. Both the methodology and application of decomposition analysis have been largely improved in the past decades. After more than 50 years’ developments, decomposition studies have become increasingly sophisticated and diversified, and tend to converge internally and integrate with other analytical approaches externally. A good understanding of the literature and state of the art is critical to identify knowledge gaps and formulate future research agenda. To this end, this study presents a literature survey for decomposition analysis applied to energy and emission issues, with a focus on the period of 2016–2021. A review for three individual decomposition techniques is first conducted, followed by a synthesis of emerging trends and features for the decomposition analysis literature as a whole. The findings are expected to direct future research in decomposition analysis.

关键词: index decomposition analysis     structural decomposition analysis     production decomposition analysis     energy     CO2 emissions    

Energy use, CO

Ertugrul YILDIRIM

《能源前沿(英文)》 2014年 第8卷 第3期   页码 269-278 doi: 10.1007/s11708-014-0326-6

摘要: In this study, the causal relations between inward foreign direct investment (FDI)-energy use per capita and inward FDI-CO emission per capita were analyzed and the inconsistency between the causal relations was investigated via bootstrap-corrected panel causality test and cross-correlation analysis. In this direction, data from 76 countries including the period of 1980–2009 was processed. No supportive evidence was found for changing causal relations to country group which was classified into income level. The findings indicated that while the pollution haven hypothesis was supported for Mozambique, United Arab Emirates and Oman, the pollution halo hypothesis was supported in the case of India, Iceland, Panama and Zambia. For other countries, energy use and CO emission were neutral to inward FDI flows in aggregated level. Furthermore, this study urged that increased (decreased) energy use due to the inward FDI flows did not necessarily mean an increase (decrease) in pollution level, and vice versa. For policy purpose, FDI attractive policy should be regulated by taking into account this possibility.

关键词: CO2 emissions     energy consumption     liberalization    

Newly-modeled graphene-based ternary nanocomposite for the magnetophotocatalytic reduction of CO2 with

《化学科学与工程前沿(英文)》 2022年 第16卷 第10期   页码 1438-1459 doi: 10.1007/s11705-022-2166-y

摘要: The development of CO2 into hydrocarbon fuels has emerged as a green method that could help mitigate global warning. The novel structured photocatalyst is a promising material for use in a photocatalytic and magneto-electrochemical method that fosters the reduction of CO2 by suppressing the recombination of electron−hole pairs and effectively transferring the electrons to the surface for the chemical reaction of CO2 reduction. In our study, we have developed a novel-structured AgCuZnS2–graphene–TiO2 to analyze its catalytic activity toward the selective evolution of CO2. The selectivity of each nanocomposite substantially enhanced the activity of the AgCuZnS2–graphene–TiO2 ternary nanocomposite due to the successful interaction, and the selectivity of the final product was improved to a value 3 times higher than that of the pure AgCuZnS2 and 2 times higher than those of AgCuZnS2–graphene and AgCuZnS2–TiO2 under ultra-violet (UV)-light (λ = 254 nm) irradiation in the photocatalytic process. The electrochemical CO2 reduction test was also conducted to analyze the efficacy of the AgCuZnS2–graphene–TiO2 when used as a working electrode in laboratory electrochemical cells. The electrochemical process was conducted under different experimental conditions, such as various scan rates (mV·s–1), under UV-light and with a 0.07 T magnetic-core. The evolution of CO2 substantially improved under UV-light (λ = 254 nm) and with 0.07 T magnetic-core treatment; these improvements were attributed to the facts that the UV-light activated the electron-transfer pathway and the magnetic core controlled the pathway of electron-transmission/prevention to protect it from chaotic electron movement. Among all tested nanocomposites, AgCuZnS2–graphene–TiO2 absorbed the CO2 most strongly and showed the best ability to transfer the electron to reduce the CO2 to methanol. We believe that our newly-modeled ternary nanocomposite opens up new opportunities for the evolution of CO2 to methanol through an electrochemical and photocatalytic process.

关键词: ternary nanocomposite     photocatalytic     electrochemical CO2 reduction     UV-light     magnetic core    

Scale up of reactors for carbon dioxide reduction

《化学科学与工程前沿(英文)》 2023年 第17卷 第1期   页码 116-122 doi: 10.1007/s11705-022-2178-7

摘要: In recent times there has been a great deal of interest in the conversion of carbon dioxide into more useful chemical compounds. On the other hand, the translation of these developments in electrochemical reduction of carbon dioxide from the laboratory bench to practical scale remains an underexplored topic. Here we examine some of the major challenges, demonstrating some promising strategies towards such scale-up, including increased electrode area and stacking of electrode pairs in different configurations. We observed that increasing the electrode area from 1 to 10 cm2 led to only a 4% drop in current density, with similarly small penalties realised when stacking sub-cells together.

关键词: CO2 reduction     electrochemical cell     electrosynthesis     upscaling    

CO<sub>2sub> methanation and co-methanation of CO and CO<sub>2sub> over Mn-promoted Ni/Al<sub>2sub>O<sub>3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

《化学科学与工程前沿(英文)》 2016年 第10卷 第2期   页码 273-280 doi: 10.1007/s11705-016-1563-5

摘要: A series of Mn-promoted 15 wt-% Ni/Al O catalysts were prepared by an incipient wetness impregnation method. The effect of the Mn content on the activity of the Ni/Al O catalysts for CO methanation and the co-methanation of CO and CO in a fixed-bed reactor was investigated. The catalysts were characterized by N physisorption, hydrogen temperature-programmed reduction and desorption, carbon dioxide temperature-programmed desorption, X-ray diffraction and high-resolution transmission electron microscopy. The presence of Mn increased the number of CO adsorption sites and inhibited Ni particle agglomeration due to improved Ni dispersion and weakened interactions between the nickel species and the support. The Mn-promoted 15 wt-% Ni/Al O catalysts had improved CO methanation activity especially at low temperatures (250 to 400 °C). The Mn content was varied from 0.86% to 2.54% and the best CO conversion was achieved with the 1.71Mn-Ni/Al O catalyst. The co-methanation tests on the 1.71Mn-Ni/Al O catalyst indicated that adding Mn markedly enhanced the CO methanation activity especially at low temperatures but it had little influence on the CO methanation performance. CO methanation was more sensitive to the reaction temperature and the space velocity than the CO methanation in the co-methanation process.

关键词: Mn promotion     nickel catalysts     CO2 methanation     co-methanation of CO and CO2    

粤港澳大湾区CO<sub>2sub>排放趋势、驱动因素及减排路径 Article

周雅, 李柯君, 梁笙, 曾雪兰, 蔡宴朋, 孟靖, 单钰理, 关大博, 杨志峰

《工程(英文)》 2023年 第23卷 第4期   页码 138-148 doi: 10.1016/j.eng.2022.03.017

摘要:

粤港澳大湾区是我国为建设世界级城市群提出的国家战略,其CO<sub>2sub>排放趋势、社会经济驱动因素和减排路径对区域经济高质量发展具有重要意义。本研究编制了2000—2019 年粤港澳大湾区CO<sub>2sub>排放清单,采用对数平均迪氏指数法探究CO<sub>2sub>排放的关键驱动力。结果表明,粤港澳大湾区CO<sub>2sub>排放在2017 年后明显放缓,已经与国内生产总值(GDP)增长脱钩。经济增长和能源强度分别是驱动和抑制粤港澳大湾区CO<sub>2sub>排放增加的主要因素。能源生产和重工业对粤港澳大湾区CO<sub>2sub>排放增长的推动作用降低,服务业正成为主要驱动力。深圳和香港的产业升级以及深圳、广州和佛山的技术进步抑制了粤港澳大湾区CO<sub>2sub>排放增长。粤港澳大湾区各城市异质性增加了减排指标分配难度和制定区域碳中和路线图的复杂性。

关键词: 粤港澳大湾区     CO<sub>2sub>排放     驱动因素     低碳发展     碳中和    

On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

《化学科学与工程前沿(英文)》 2023年 第17卷 第11期   页码 1741-1754 doi: 10.1007/s11705-023-2332-x

摘要: Based on monolayer dispersion theory, Co3O4/ZSM-5 catalysts with different loadings have been prepared for selective catalytic reduction of nitrogen oxides by ammonia. Co3O4 can spontaneously disperse on HZSM-5 support with a monolayer dispersion threshold of 0.061 mmol 100 m–2, equaling to a weight percentage around 4.5%. It has been revealed that the quantities of surface active oxygen (O2) and acid sites are crucial for the reaction, which can adsorb and activate NOx and NH3 reactants effectively. Below the monolayer dispersion threshold, Co3O4 is finely dispersed as sub-monolayers or monolayers and in an amorphous state, which is favorable to generate the two kinds of active sites, hence promoting the performance of ammonia selective catalytic reduction of nitrogen oxide. However, the formation of crystalline Co3O4 above the capacity is harmful to the reaction performance. 4% Co3O4/ZSM-5, the catalyst close to the monolayer dispersion capacity, possesses the most abundant active O2 species and acidic sites, thereby demonstrating the best reaction performance in all the samples. It is proposed the optimal Co3O4/ZSM-5 catalyst can be prepared by loading the capacity amount of Co3O4 onto HZSM-5 support.

关键词: Co3O4/ZSM-5     NOx-SCR by NH3     monolayer dispersion threshold effect     surface acid sites     surface active O2 anions    

标题 作者 时间 类型 操作

太阳能技术对我国未来减排CO<sub>2sub> 的贡献

赵玉文

期刊论文

ZnFe<sub>2sub>O<sub>4sub> deposited on BiOCl with exposed (001) and (010) facets for photocatalyticreduction of CO<sub>2sub> in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

期刊论文

Does environmental infrastructure investment contribute to emissions reduction? A case of China

Xiaoqian SONG, Yong GENG, Ke LI, Xi ZHANG, Fei WU, Hengyu PAN, Yiqing ZHANG

期刊论文

Reduction potential of the energy penalty for CO capture in CCS

期刊论文

以净零排放为目标的封存驱动型CO<sub>2sub>提高采收率方法

刘月亮, 芮振华

期刊论文

China’s pre-2020 CO

Hailin WANG

期刊论文

Reducing CO emissions from the rebalancing operation of the bike-sharing system in Beijing

期刊论文

Greenhouse gas emissions during co-composting of cattle feedlot manure with construction and demolition

Xiying Hao, Francis J. Larney

期刊论文

Decomposition analysis applied to energy and emissions: A literature review

期刊论文

Energy use, CO

Ertugrul YILDIRIM

期刊论文

Newly-modeled graphene-based ternary nanocomposite for the magnetophotocatalytic reduction of CO2 with

期刊论文

Scale up of reactors for carbon dioxide reduction

期刊论文

CO<sub>2sub> methanation and co-methanation of CO and CO<sub>2sub> over Mn-promoted Ni/Al<sub>2sub>O<sub>3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

期刊论文

粤港澳大湾区CO<sub>2sub>排放趋势、驱动因素及减排路径

周雅, 李柯君, 梁笙, 曾雪兰, 蔡宴朋, 孟靖, 单钰理, 关大博, 杨志峰

期刊论文

On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

期刊论文