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Recent advances in special morphologic photocatalysts for NO removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1573-0

Abstract:

● Systematic information of recent progress in photocatalytic NO<sub> <i> x i>sub> removal is provided.

Keywords： NO<sub><i>xi>sub> removal     Photocatalyst     Graphene     C<sub>3sub>N<sub>4sub>     Bi-based compounds    

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Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1363-5

Abstract:

• A V<sub>2sub>O<sub>5sub>/TiO<sub>2sub> granular catalyst forsimultaneous removal of NO and chlorobenzene.

Keywords： NO<sub><i>xi>sub>     Chlorobenzene     Simultaneous removal     Kinetic study     Performance prediction     V<sub>2sub>O<sub>5sub>/TiO<sub>2sub>     Graphical abstract    

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Chemical poison and regeneration of SCR catalysts for NO<sub><i>xi>sub> removal from stationary sources

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 413-427 doi: 10.1007/s11783-016-0832-3

Abstract: Selective catalytic reduction (SCR) of NO with NH is an effective technique to remove NO from stationary sources, such as coal-fired power plant and industrial boilers. Some of elements in the fly ash deactivate the catalyst due to strong chemisorptions on the active sites. The poisons may act by simply blocking active sites or alter the adsorption behaviors of reactants and products by an electronic interaction. This review is mainly focused on the chemical poisoning on V O -based catalysts, environmental-benign catalysts and low temperature catalysts. Several common poisons including alkali/alkaline earth metals, SO and heavy metals etc. are referred and their poisoning mechanisms on catalysts are discussed. The regeneration methods of poisoned catalysts and the development of poison-resistance catalysts are also compared and analyzed. Finally, future research directions in developing poisoning resistance catalysts and facile efficient regeneration methods for SCR catalysts are proposed.

Keywords： flue gas     DeNO<sub><i>xi>sub>     SCR catalyst     poison and regeneration    

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CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction mechanistic study

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1539-2

Abstract:

• CeO<sub>2sub> doping significantly improved low-temperature NH<sub>3sub>-SCR activity on FeTiO<sub><i>xi>sub>.

Keywords： NH<sub>3sub>-SCR     CeO<sub>2sub> doping     Low-temperature NO<sub><i>xi>sub> removal     Improved redoxproperty     <i>In situi> XAFS analysis    

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Tailoring the simultaneous abatement of methanol and NO on Sb-Ce-Zr catalysts via copper modification

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11684-022-1565-0

Abstract:

● Cu addition enhances CH<sub>3sub>OH oxidation and alleviates

Keywords： Copper modification     Sb-CeZr<sub>2sub>O<sub><i>xi>sub> catalyst     NO<sub><i>xi>sub>     Methanol     Simultaneous removal    

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NiFeRuO<sub><i>xi>sub> nanosheets on Ni foam as an electrocatalyst for efficient

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1698-1706 doi: 10.1007/s11705-023-2334-8

Abstract: The electrocatalyst NiFeRuO<sub><i>xi>sub>/NF, comprised of NiFeRuO<sub><i>xi>sub> nanosheetsNiFeRuO<sub><i>xi>sub>/NF displays high electrocatalytic activity and stability for overall alkalineA solar-driven system containing such a bifunctional NiFeRuO<sub><i>xi>sub>/NF has an almost 100%The NiFeRuO<sub><i>xi>sub> coating around Ni foam is an anti-corrosion layer and also a critical

Keywords： NiFeRuO<sub><i>xi>sub> nanosheets     Ni foam     electrocatalysis     overall seawater splitting     solar-driven    

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Preparation and characterization of lithium

Chang WANG,Yanlong ZHAI,Xi WANG,Ming ZENG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 471-477 doi: 10.1007/s11705-014-1449-3

Abstract: Lithium -MnO ion-sieves were prepared from spinel LiMn O via treatment with nitric acid. The LiMn O was synthesized by a solid state reaction between LiOH·H O and MnO . The effects of the calcination time and temperature on the preparation of the LiMn O precursor and the lithium ion-sieve were investigated. In addition, the Li extraction ratio, the Mn dissolving ratio and the adsorption properties of the lithium ion-sieve were all measured. The lithium ion-sieve had a high exchange capacity and was selective for Li . Specifically, at pH= 13, the ion exchange capacity of Li was 30.9 mg/g in 10 mmol/L LiCl solution and the lithium extraction ratio and manganese dissolving ratio were 95% and 25%, respectively.

Keywords： lithium ion-sieve     solid state reaction     adsorption     LiMn<sub>2sub>O<sub>4sub>    

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Evaluation of H<sub>2sub> on the Evolution Mechanism of NO<sub><i>xi>sub> Storage and Reductionover Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> Catalysts Article

Pan Wang, Jing Yi, Chuan Sun, Peng Luo, Lili Lei

Engineering 2019, Volume 5, Issue 3,   Pages 568-575 doi: 10.1016/j.eng.2019.02.005

Abstract:

In this investigation, Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> catalysts were preparedThe physical and chemical properties of the Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub>>xsub>, CeO<sub>2sub>, and BaCO<sub>3sub>, whose peaks were observed in X-ray diffraction>catsub> at 350 °C, which was ascribed to the increase in NO<sub>2sub> yield.and conversion were increased when the time of H<sub>2sub> exposure (i.e., 30 s, 45 s, and 60 s) was

Keywords： Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> catalysts     Physicochemical properties     NO<sub><i>xi>sub> storageand reduction     NO<sub><i>xi>sub> emission     H<sub>2sub> reductant    

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NO<sub><i>xi>sub> and H<sub>2sub>S formation in the reductive zone of air-staged combustion of

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 4-13 doi: 10.1007/s11708-020-0804-y

Abstract: Low NO combustion of blended coals is widely used in coal-fired boilers in China to control NO emission; thus, it is necessary to understand the formation mechanism of NO and H S during the combustion of blended coals. This paper focused on the investigation of reductive gases in the formation of NO and H S in the reductive zone of blended coals during combustion. Experiments with Zhundong (ZD) and Commercial (GE) coal and their blends with different mixing ratios were conducted in a drop tube furnace at 1200°C–1400°C with an excessive air ratio of 0.6–1.2. The coal conversion and formation characteristics of CO, H S, and NO in the fuel-rich zone were carefully studied under different experimental conditions for different blend ratios. Blending ZD into GE was found to increase not only the coal conversion but also the concentrations of CO and H S as NO reduction accelerated. Both the CO and H S concentrations inblended coal combustion increase with an increase in the combustion temperature and a decrease in the excessive air ratio. Based on accumulated experimental data, one interesting finding was that NO and H S from blended coal combustion were almost directly dependent on the CO concentration, and the CO concentration of the blended coal combustion depended on the single char gasification conversion.Thus, CO, NO , and H S formation characteristics from blended coal combustion can be well predicted by single char gasification kinetics.

Keywords： blended coal combustion     NO<sub><i>x i>sub>formation     H<sub>2sub>S formation     air staged combustion    

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Thermal and Mechanical Properties Optimization of <i>ABi>O<sub>4sub> Type EuNbO<sub>4sub> By the<i>Bi>-Site Substitution of Ta Article

Lin Chen, Jing Feng

Engineering 2020, Volume 6, Issue 2,   Pages 177-184 doi: 10.1016/j.eng.2019.12.006

Abstract:

Ferroelastic ABO<sub>4sub> type RETaO<sub>4sub> and RENbO<sub>4sub> ceramics (where>4sub> have been found to be better than those of RENbO<sub>4sub>.>4sub> fabricated through a solid-state reaction (SSR).The Young's modulus and the thermal expansion coefficient (TEC) of EuNbO<sub>4sub> are effectivelyThe results indicate that the thermal and mechanical properties of EuNbO<sub>4sub> can be effectually

Keywords： Thermal barrier coatings     Rare earth niobates     Substitution     Thermal conductivity     Thermal expansion coefficients     Young’s modulus    

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Removal of SO

Xiaolei LI, Chunying ZHU, Youguang MA

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 185-191 doi: 10.1007/s11705-013-1326-5

Abstract: In this work, the removal of SO from gas mixture with air and SO by ammonium bicarbonate aqueous solutionconcentration of ammonium bicarbonate, the SO inlet concentration of gas phase and the gas flow rate on the removalshorter the lasting time of SO completely removed in gas outlet, and then the faster the decrease in the removalsolution pH was less than the critical pH, it would sharply fall, resulting in a rapid decrease of the SO removalA theoretical model for predicting the SO removal rate has been developed by taking the chemical enhancement

Keywords： SO<sub>2sub> removal     bubble column reactor     removal rate     ammonium bicarbonate     absorbent    

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VALORIZATION OF BIOGAS THROUGH SIMULTANEOUS CO AND HS REMOVAL BY RENEWABLE AQUEOUS AMMONIA SOLUTION IN

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 468-478 doi: 10.15302/J-FASE-2022473

Abstract:

● Simultaneous H<sub>2sub>S and CO<sub>2sub> removal from biogas

Keywords： biomethane     biogas purification     CO<sub>2sub> removal     H<sub>2sub>S removal     membrane absorption    

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Occurrence and removal of selected polycyclic musks in two sewage treatment plants in Xi’an, China

Yongxiang REN, Kai WEI, Hua LIU, Guoqiang SUI, Junping WANG, Yanjun SUN, Xiaohui ZHENG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 166-172 doi: 10.1007/s11783-012-0471-2

Abstract: The occurrence and removal of two representative polycyclic musks, galaxolide (HHCB) and tonalide (AHTN) were investigated in three different processes of two sewage treatment plants (STPs) in Xi’an, ChinaThe removal efficiency of the two musks varied in the ranges of 43.1%–70.4% for HHCB and 54.2%–84.4%Advanced processes of activated sludge did not show a significant superiority on selected musk removalThe selected musk removal mainly resulted from the adsorption function of activated sludge.

Keywords： polycyclic musk     sewage     tonalide (AHTN)     galaxolide (HHCB)     removal efficiency     adsorption    

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Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1199-1208 doi: 10.1007/s11709-021-0749-1

Abstract: Shear wave velocity ( <i>Vi> <sub>Ssub>) is a key parameter in such analysis, although the economyVarious <i>Vi> <sub>Ssub>–SPT– <i>Ni> correlations are routinely incorporated in seismic hazardanalysis to estimate the value of <i>Vi> <sub>Ssub>.i> <sub>Ssub> calculations.The scattering nature of the <i>Vi> <sub>Ssub> values estimated using different <i>Vi> <sub>S

Keywords： uncertainties     <i>Vi> <sub>Ssub>– <i>Ni> correlations     <i>Vi> <sub>S30sub>     SPT data     statistical    

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Review on cryogenic technologies for CO removal from natural gas

Yujing BI, Yonglin JU

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 793-811 doi: 10.1007/s11708-022-0821-0

Abstract: Compared with conventional methods, cryogenic technologies for CO<sub>2sub> removal from NG have attractedwhich provides a basis for the process design of cryogenic CO<sub>2sub> removal from NG.Then, the detailed techniques of design and optimization for cryogenic CO<sub>2sub> removal in recentFinally, several improvements for further development of the cryogenic CO<sub>2sub> removal processThe removal process in combination with the phase change and the traditional techniques with renewable

Keywords： cryogenic CO<sub>2sub> removal     purification of natural gas (NG)     biogas upgrading     CH<sub>4sub>-CO<sub>2sub> binary system    

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Title Author Date Type Operation

Recent advances in special morphologic photocatalysts for NO removal

Journal Article

Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance

Journal Article

Chemical poison and regeneration of SCR catalysts for NO<sub><i>xi>sub> removal from stationary sources

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

Journal Article

CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction mechanistic study

Journal Article

Tailoring the simultaneous abatement of methanol and NO on Sb-Ce-Zr catalysts via copper modification

Journal Article

NiFeRuO<sub><i>xi>sub> nanosheets on Ni foam as an electrocatalyst for efficient

Journal Article

Preparation and characterization of lithium

Chang WANG,Yanlong ZHAI,Xi WANG,Ming ZENG

Journal Article

Evaluation of H<sub>2sub> on the Evolution Mechanism of NO<sub><i>xi>sub> Storage and Reductionover Pt–Ba–Ce/γ-Al<sub>2sub>O<sub>3sub> Catalysts

Pan Wang, Jing Yi, Chuan Sun, Peng Luo, Lili Lei

Journal Article

NO<sub><i>xi>sub> and H<sub>2sub>S formation in the reductive zone of air-staged combustion of

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

Journal Article

Thermal and Mechanical Properties Optimization of <i>ABi>O<sub>4sub> Type EuNbO<sub>4sub> By the<i>Bi>-Site Substitution of Ta

Lin Chen, Jing Feng

Journal Article

Removal of SO

Xiaolei LI, Chunying ZHU, Youguang MA

Journal Article

VALORIZATION OF BIOGAS THROUGH SIMULTANEOUS CO AND HS REMOVAL BY RENEWABLE AQUEOUS AMMONIA SOLUTION IN

Journal Article

Occurrence and removal of selected polycyclic musks in two sewage treatment plants in Xi’an, China

Yongxiang REN, Kai WEI, Hua LIU, Guoqiang SUI, Junping WANG, Yanjun SUN, Xiaohui ZHENG

Journal Article

Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Journal Article

Review on cryogenic technologies for CO removal from natural gas

Yujing BI, Yonglin JU

Journal Article