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Performance and kinetics of iron-based oxygen carriers reduced by carbon monoxide for chemical looping

Xiuning HUA,Wei WANG,Feng WANG

《环境科学与工程前沿（英文）》 2015年 第9卷 第6期   页码 1130-1138 doi: 10.1007/s11783-015-0821-y

摘要： Chemical looping combustion is a promising technology for energy conversion due to its low-carbon, high-efficiency, and environmental-friendly feature. A vital issue for CLC process is the development of oxygen carrier, since it must have sufficient reactivity. The mechanism and kinetics of CO reduction on iron-based oxygen carriers namely pure Fe O and Fe O supported by alumina (Fe O /Al O ) were investigated using thermo-gravimetric analysis. Fe O /Al O showed better reactivity over bare Fe O toward CO reduction. This was well supported by the observed higher rate constant for Fe O /Al O over pure Fe O with respective activation energy of 41.1±2.0 and 33.3±0.8 kJ·mol . The proposed models were compared via statistical approach comprising Akaike information criterion with correction coupled with F-test. The phase-boundary reaction and diffusion control models approximated to 95% confidence level along with scanning electron microscopy results; revealed the promising reduction reactions of pure Fe O and Fe O /Al O . The boosting recital of iron-based oxygen carrier support toward efficient chemical looping combustion could be explained accurately through the present study.

关键词： chemical looping combustion     iron-based oxygen carriers     reduction kinetics     carbon monoxide     statistics    

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Catalytic oxidation of carbon monoxide, toluene, and ethyl acetate over the

Zhidan Fu, Lisha Liu, Yong Song, Qing Ye, Shuiyuan Cheng, Tianfang Kang, Hongxing Dai

《化学科学与工程前沿（英文）》 2017年 第11卷 第2期   页码 185-196 doi: 10.1007/s11705-017-1631-5

摘要： The Pd catalyst supported on cryptomelane-type manganese oxide octahedral molecular sieve (OMS-2) were prepared. The effect of Pd loading on the catalytic oxidation of carbon monoxide, toluene, and ethyl acetate over Pd/OMS-2 has been investigated. The results show that the Pd loading plays an important role on the physicochemical properties of the Pd/OMS-2 catalysts which outperform the Pd-free counterpart with the 0.5Pd/OMS-2 catalyst being the best. The temperature for 50% conversion was 25, 240 and 160 °C, and the temperature for 90% conversion was 55, 285 and 200 °C for oxidation of CO, toluene, and ethyl acetate, respectively. The low-temperature reducibility and high oxygen mobility of Pd/OMS-2 are the factors contributable to the excellent catalytic performance of 0.5Pd/OMS-2.

关键词： cryptomelane-type manganese oxide octahedral molecular sieve     oxygen mobility     reducibility     carbon monoxide oxidation     volatile organic compound combustion    

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Numerical study on laminar flame speed of natural gas-carbon monoxide-air mixtures

Chen DONG, Qulan ZHOU, Qinxin ZHAO, Tongmo XU, Shi’en HUI

《化学科学与工程前沿（英文）》 2010年 第4卷 第4期   页码 411-416 doi: 10.1007/s11705-010-0514-9

摘要： Laminar flame speeds of natural gas-carbon monoxide-air mixtures are calculated by CHEMKIN II with GRI Mech-3.0 over a large range of fuel compositions, equivalence ratios, and initial temperatures. The calculated results of natural gas are compared with previous experimental results that show a good agreement. The calculated laminar flame speeds of natural gas-carbon monoxide-air mixtures show a nonmonotonic increasing trend with volumetric fraction of carbon monoxide and an increasing trend with the increase of initial temperature of mixtures. The maximum laminar flame speed of certain fuel blend reaches its biggest value when there is 92% volumetric fraction of carbon monoxide in fuel at different initial temperatures. Five stoichiometric natural gas-carbon monoxide-air mixtures are selected to study the detailed chemical structure of natural gas-carbon monoxide-air mixtures. The results show that at stoichiometric condition, the fuel blend with 80% volumetric fraction of carbon monoxide has the biggest laminar flame speed, and the C normalized total production rate of methane with 80% volumetric fraction of carbon monoxide is the largest of the five stoichiometric mixtures.

关键词： laminar flame speed     numerical study     nonmonotonic increasing trend    

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Cooperative effect between copper species and oxygen vacancy in CeZrCuO catalysts for carbon monoxide

《化学科学与工程前沿（英文）》 2021年 第15卷 第6期   页码 1524-1536 doi: 10.1007/s11705-021-2106-2

摘要： The effects of Zr doping on the existence of Cu and the catalytic performance of Ce0.7−xZrxCu0.3O2 for CO oxidation were investigated. The characterization results showed that all samples have a cubic structure, and a small amount of Zr doping facilitates Cu2+ ions entering the CeO2 lattice, but excessive Zr doping leads to the formation of surface CuO crystals again. Thus, the number of oxygen vacancies caused by the Cu2+ entering the lattice (e.g., Cu2+–□–Ce4+; □: oxygen vacancy), and the amount of reducible copper species caused by CuO crystals, varies with the Zr doping. Catalytic CO oxidation tests indicated that the oxygen vacancy and the reducible copper species were the adsorption and activation sites of O2 and CO, respectively, and the cooperative effects between them accounted for the high CO oxidation activity. Thus, the samples x = 0.1 and 0.3, which possessed the most oxygen vacancy or reducible copper species, showed the best activity for CO oxidation, with full CO conversion obtained at 110 °C. The catalyst is also stable and has good resistance to water during the reaction.

关键词： Ce–Zr–Cu–O     CO oxidation     reducible copper species     oxygen vacancy     cooperative effect    

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细水雾作用下烟气组分浓度变化规律的模拟研究

房玉东

《中国工程科学》 2014年 第16卷 第8期   页码 99-105

摘要：

在ISO 9705 标准房间通过模拟实验研究了细水雾与火灾烟气的相互作用，揭示了细水雾作用下烟气中氧气、一氧化碳和二氧化碳浓度的变化规律，建立了氧气、一氧化碳和二氧化碳浓度与细水雾工作压力及风机速率的数学模型。实验发现当风机速率达到1.5 kg/s 时烟气组分浓度变化规律发生突变，对这一现象进行了深入分析和解释。本文为细水雾技术用于火灾烟气抑制提供了必要的理论基础和科学的参考依据。

关键词： 细水雾     氧气     一氧化碳     二氧化碳    

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Emission components characteristics of a bi-fuel vehicle at idling condition

Sameh M. METWALLEY, Shawki A. ABOUEL-SEOUD, Abdelfattah M. FARAHAT

《能源前沿（英文）》 2011年 第5卷 第3期   页码 322-329 doi: 10.1007/s11708-011-0158-6

摘要： Natural gas (NG) represents today a promising alternative to conventional fuels for road vehicles propulsion, since it is characterized by a relatively low cost, better geopolitical distribution than oil, and lower environmental impact. This explains the current spreading of compressed natural gas (CNG) fuelled spark ignition (SI) engine, above all in the bi-fuel version, which is able to run either with gasoline or with NG. However, the aim of the present investigation is to evaluate the emission characteristics at idling condition. The vehicle engine was converted to bi-fueling system from a gasoline engine, and operated separately either with gasoline or CNG. Two different fuel injection systems (i.e., multi-point injection (MPI)-sequential and closed-loop venturi-continuous) are used, and their influences on the formation of emissions at different operating conditions are examined. A detailed comparative analysis of the engine exhaust emissions using gasoline and CNG is made. The results indicate that the CNG shows low air index and lower emissions of carbon monoxide (CO), carbon dioxide (CO ), and total hydrocarbon (THC) compared to gasoline.

关键词： road vehicle engine     fuel injection systems     carbon monoxide (CO)     carbon dioxide (CO2)     total hydrocarbon (THC)     vehicle idle conditions     air index    

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Review on the applications of Tropospheric Emissions Spectrometer to air-quality research: Perspectives for China

Yuxuan WANG, Yuqiang ZHANG, Jiming HAO,

《环境科学与工程前沿（英文）》 2010年 第4卷 第1期   页码 12-19 doi: 10.1007/s11783-010-0012-9

摘要： The Tropospheric Emissions Spectrometer (TES) aboard the National Aeronautics and Space Administration’s (NASA’s) Aura satellite launched in July 2004 is the first satellite instrument to provide simultaneous retrievals of ozone (O) and carbon monoxide (CO) throughout the Earth’s lower atmosphere. This paper briefly reviews the TES instrument, the retrieval of O and CO profiles, and the validation of the retrievals. The applications of TES O and CO products include mapping the vertical and horizontal distribution of tropospheric O and CO and their correlations, examining the regional and continental outflow, and analyzing the variability of the two species associated with certain weather and climatic conditions, such as El Niño and the Asian monsoon. TES retrievals of O and CO offer an important new source of satellite data over China with good spatial and temporal coverage that can provide evaluation and constraints on the performance of chemical transport models in simulating the general features of ozone pollution over China. Special observations have been conducted and requests may be submitted to the TES team to make geographically focused observations of O and CO over China.

关键词： Tropospheric Emissions Spectrometer (TES)     ozone     carbon monoxide     China    

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Self-sustained catalytic combustion of CO enhanced by micro fluidized bed: stability operation, fluidization state and CFD simulation

《环境科学与工程前沿（英文）》 2023年 第17卷 第9期 doi: 10.1007/s11783-023-1709-x

摘要：

● Catalytic combustion in fluidized bed realizes efficient heat and mass transfer.

关键词： Self-sustained catalytic combustion     Carbon monoxide     Cu1–xCexOy     Fluidized bed     Computational fluid dynamics    

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Copolymerization of polyketones catalyzed by polyacrylonitrile resin-supported palladium acetate

GUO Jintang, ZHANG Hongxin, WANG Bo, YE Yaqin

《化学科学与工程前沿（英文）》 2008年 第2卷 第2期   页码 165-170 doi: 10.1007/s11705-008-0010-7

摘要： The crosslinked polyacrylonitrile (PAN) was synthesized by suspension polymerization using acrylonitrile (ANT) and divinylbenzene (DVB). Effects of a variety of conditions on the polymerization of PAN particle size and stiffness were investigated. Polyketone was prepared by the copolymerization of carbon monoxide (CO) and styrene (ST) catalyzed by PAN resin-supported palladium acetate. The resin-supported catalyst and the copolymerization product were characterized by infrared spectroscopy (IR) and Scanning Electron Microscopy (SEM). Effects of the components of a catalytic system and reaction time on the catalytic activity were studied. The reusability of the resin-supported catalyst was also investigated. Results indicated that the resin-supported catalyst has excellent catalytic property. The yield of polyketone was 6.2348 g when using 1 g of resin and 22.4 mg of palladium acetate.

关键词： copolymerization     Electron Microscopy     monoxide     excellent catalytic     Polyketone    

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AGRICULTURAL GREEN DEVELOPMENT TO ACHIEVE FOOD SECURITY AND CARBON REDUCTION IN THE CONTEXT OF CHINA’S DUAL CARBON GOALS

《农业科学与工程前沿（英文）》 2023年 第10卷 第2期   页码 262-267 doi: 10.15302/J-FASE-2023496

摘要：

● To achieve food security, Chinese agriculture– food system could not achieve C neutrality.

关键词： agriculture     carbon neutrality     carbon peak     food security     carbon mitigation strategies    

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Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

《环境科学与工程前沿（英文）》 2012年 第6卷 第4期   页码 524-530 doi: 10.1007/s11783-011-0333-3

摘要： This research is aimed at the rapid development of a low-carbon economy, in which we propose the classification and application of relevant management measures to affect the development of environmental management ideas and measures of the low-carbon economy, which we called as low carbon management measures. According to scientific analysis of the low-carbon economy, we can divide low-carbon management measures into three parts: measures for reduction of carbon sources, carbon flow planning, and increase of carbon sinks. Furthermore, we list the advantages that China can utilize to develop its own low-carbon management measures. In the end, necessary adjustments to environmental management measures in China can be made according to this scientific classification.

关键词： low-carbon economy     low carbon management     carbon source     carbon flow     carbon sink    

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Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

《能源前沿（英文）》 2023年 第17卷 第3期   页码 324-331 doi: 10.1007/s11708-023-0883-7

摘要： First, a brief introduction is made to the four basic judgments and understandings of the goals of “carbon peaking and carbon neutrality.” Then, an in-depth elaboration is provided on the eight major strategies for achieving the goals of “carbon peaking and carbon neutrality,” including conservation and efficiency priority, energy security, non-fossil energy substitution, re-electrification, resource recycling, carbon sequestration, digitalization and cooperation between countries. Next, eight major implementation paths for achieving the goals of “carbon peaking and carbon neutrality” are discussed in detail, including industrial restructuring; building a clean, low-carbon, safe and efficient energy system, and renewing the understanding of China’s energy resource endowment; accelerating the construction of a new-type power system with a gradually growing proportion of new energy, and realizing the “possible triangle” of high-quality energy system development; utilizing electrification and deep decarbonization technologies to promote the orderly peaking and gradual neutralization of carbon emissions in the industrial sector; promoting the low-carbon transition of transportation vehicles to achieve carbon peaking and carbon neutrality in the transportation sector; focusing on breaking through key green building technologies to achieve zero carbon emissions from building electricity and heat; providing a strong technical support for carbon removal to achieve carbon neutrality; accelerating the construction of the integrated planning and assessment mechanism for pollution and carbon reduction, establishing a sound strategy, planning, policy and action system, and optimizing the carbon trading system. Afterwards, it is particularly pointed out that the realization of the goals of “carbon peaking and carbon neutrality” cannot be separated from the support of sci-tech innovation. Finally, it is stressed that carbon neutrality is not the end, but an important milestone. If viewed from the perspective of future energy, the significance and historical status of the goals of “carbon peaking and carbon neutrality” will be more understandable.

关键词： carbon peaking and carbon neutrality     strategy     implementation path     important sci-tech innovation implementation path    

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HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

《农业科学与工程前沿（英文）》 2023年 第10卷 第2期   页码 153-154 doi: 10.15302/J-FASE-2023497

摘要： HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

关键词： CARBON     ISSUE     NEUTRALITY     HIGHLIGHTS     AGRICULTURE    

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LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA

《农业科学与工程前沿（英文）》 2023年 第10卷 第3期   页码 341-362 doi: 10.15302/J-FASE-2023509

摘要：

● Carbon reduction potential of manure treatment technologies was summarized.

关键词： valorization of animal manure     manure management     carbon emission     carbon footprint     methodology     carbon trading    

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Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

《能源前沿（英文）》 2011年 第5卷 第2期   页码 214-220 doi: 10.1007/s11708-010-0133-7

摘要： The influence of energy intensity on carbon intensity depends upon the fraction of energy mixes with high carbon emissions in the total energy mixes . The correlation of with a variety of primary energy mix fractions and technology advances such as CCS and CCHP is analyzed and deduced. Taking the long-term carbon reduction target in 2050 settled upon by the Copenhagen Agreement and the mid-term target suggested by the “450 Scenes Program” of the International Energy Agency (IEA) as constraints, the new pattern of the energy transition of the world in 2020, 2030, and 2050 are estimated and figured out. The peak value of energy consumption will lag behind the peak value of carbon emissions; the world energy structure shifting point will be in 2020–2025. Estimates show that China’s mid-2020 and long-term targets of energy-saving and emission reduction announced by the Chinese government might be achieved.

关键词： correlation     carbon emissions     energy consumption     high carbon emissions energy mix     target of emission reduction     reliability    

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标题 作者 时间 类型 操作

Performance and kinetics of iron-based oxygen carriers reduced by carbon monoxide for chemical looping

Xiuning HUA,Wei WANG,Feng WANG

期刊论文

Catalytic oxidation of carbon monoxide, toluene, and ethyl acetate over the

Zhidan Fu, Lisha Liu, Yong Song, Qing Ye, Shuiyuan Cheng, Tianfang Kang, Hongxing Dai

期刊论文

Numerical study on laminar flame speed of natural gas-carbon monoxide-air mixtures

Chen DONG, Qulan ZHOU, Qinxin ZHAO, Tongmo XU, Shi’en HUI

期刊论文

Cooperative effect between copper species and oxygen vacancy in CeZrCuO catalysts for carbon monoxide

期刊论文

细水雾作用下烟气组分浓度变化规律的模拟研究

房玉东

期刊论文

Emission components characteristics of a bi-fuel vehicle at idling condition

Sameh M. METWALLEY, Shawki A. ABOUEL-SEOUD, Abdelfattah M. FARAHAT

期刊论文

Review on the applications of Tropospheric Emissions Spectrometer to air-quality research: Perspectives for China

Yuxuan WANG, Yuqiang ZHANG, Jiming HAO,

期刊论文

Self-sustained catalytic combustion of CO enhanced by micro fluidized bed: stability operation, fluidization state and CFD simulation

期刊论文

Copolymerization of polyketones catalyzed by polyacrylonitrile resin-supported palladium acetate

GUO Jintang, ZHANG Hongxin, WANG Bo, YE Yaqin

期刊论文

AGRICULTURAL GREEN DEVELOPMENT TO ACHIEVE FOOD SECURITY AND CARBON REDUCTION IN THE CONTEXT OF CHINA’S DUAL CARBON GOALS

期刊论文

Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

期刊论文

Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

期刊论文

HIGHLIGHTS OF THE SPECIAL ISSUE “CARBON NEUTRALITY AND A LOW CARBON ECONOMY FOR AGRICULTURE”

期刊论文

LIVESTOCK AND POULTRY MANURE MANAGEMENT FROM THE PERSPECTIVE OF CARBON NEUTRALITY IN CHINA

期刊论文

Correlation between carbon emissions and energy structure –Reliability analysis of low carbon target

Ben HUA

期刊论文