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Formation of CaCO hollow microspheres in carbonated distiller waste from Solvay soda ash plants

Frontiers of Chemical Science and Engineering Pages 1659-1671 doi: 10.1007/s11705-022-2173-z

Abstract: For decades, distiller waste and CO2sub> were not the first choice for production of high valuedWhen 2.5 L·min^–1·L^–1 CO2sub> was flowed into distiller waste (pH = 11.4), spheres with 4–13 μm diameters and about 2 μm shell thickness were obtained.Firstly, the Ca(OH)2sub> in the distiller waste stimulated the nucleation of calcite with a non-templateFinally, the flow process for absorption of CO2sub> by distiller waste was designed and found

Keywords： distiller waste CO2sub> hollow microsphere CaCO3sub> Ca(OH)2sub> inside−out

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Laboratory study on high-temperature adsorption of HCl by dry-injection of Ca(OH)

Junjun TAN,Guohua YANG,Jingqiao MAO,Huichao DAI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6, Pages 863-870 doi: 10.1007/s11783-013-0618-9

Abstract: experiments were conducted in a dual-layer granular bed filter, at gas temperatures of 500°C–700°C and (Ca)/ (Cl)molar ratios of 1.0–5.0 using the silver nitrate titration method by dry adsorbent powders Ca(OH) .of HCl and utilization efficiency of Calcium were studied, by varying relevant factors including (Capressure was more effective, and the HCl adsorption efficiency could rapidly reach over 90% with (Ca

Keywords： acid gas HCl Ca(OH)2sub> dry adsorption high temperature dual-layer granular bed filter

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An investigation of the CHOH and CO selectivity of CO hydrogenation over Cu–Ce–Zr catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 950-962 doi: 10.1007/s11705-022-2162-2

Abstract: 2sub> to CO/CH3sub>OH products./mml:mn> = 5.4%–15.6%) and CH3sub>OHfurther hydrogenation of intermediate species to CH3sub>OH and improving the hydrogenation rateHence, the Cu–Ce–Zr catalyst with 8 wt% Ce loading favors CH3sub>OH selectivity and CO22sub> hydrogenation to CH3sub>OH.

Keywords： CO2sub> hydrogenation Cu–Ce–Zr hydroxyls CO/CH3sub>OH selectivity

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Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

WANG Jingang, HU Jinbang, WANG Daobin, DUAN Zhenya

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3, Pages 266-270 doi: 10.1007/s11705-007-0048-y

Abstract: kinetic model of the pozzolanic reaction for the preparation of flue gas desulfurizers from fly ash and Ca(OH) was deduced on the basis of solid phase reaction kinetic theory.

Keywords： comparison calculated pozzolanic reaction precision preparation

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Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

Frontiers in Energy 2021, Volume 15, Issue 3, Pages 710-720 doi: 10.1007/s11708-021-0764-x

Abstract: activity of the InP-based catalyst are effectively enhanced by applying an anti-corrosion SnO layer and In(OH)3sub> transition layer, which reduces the crystal mismatch between SnO and InP and increasesThe obtained Pt/SnO/In(OH)3sub>/InP exhibits a hydrogen production rate of 144.42 µmol/g in 3illumination in multi-cycle tests without remarkable decay, 123 times higher than that of naked In(OH)3sub>/InP without any electron donor under visible irradiation.

Keywords： SnO/In(OH)3sub>/InP photocatalyst enhanced activity and stability for water splitting corrosion

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Metal-Free Hexagonal Perovskite High-Energetic Materials with NH3sub>OH⁺/NH2sub>NH3sub>⁺ as B-site Cations Article

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Engineering 2020, Volume 6, Issue 9, Pages 1013-1018 doi: 10.1016/j.eng.2020.05.018

Abstract: >2sub>dabco)B(ClO4sub>)3sub> (H2sub>dabco²⁺ = 1,4-diazabicyclo[2.2.2]octane-1,4-diium), were fabricated via an easily scaled-up synthetic route using NH3sub>OH⁺ and NH2sub>NH3sub>⁺ as B-site cations, respectively.Compared with their NH4sub>⁺ analog ((H2sub>dabco)(NH4sub>)(ClO4sub>)3sub>; DAP-4), which has a cubic perovskite structure, DAP-6 and DAP-7 have higher crystal

Keywords： Energetic materials Single explosive Solid propellant Metal-free Hexagonal perovskite

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Effect of K and Ca on catalytic activity of Mn-CeO

Boxiong SHEN, Lidan DENG, Jianhong CHEN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4, Pages 512-517 doi: 10.1007/s11783-013-0519-y

Abstract: The poisoning of K and Ca on the catalyst of Mn-CeO /Ti-PILC is an important problem because K and CaTo investigate the effect of K and Ca on the physicochemical characters of the catalysts, the techniques(Ca)Mn-CeO /Ti-PILC and (K)Mn-CeO /Ti-PILC are denoted for the dopes of the catalyst of Mn-CeO /Ti-PILCwith Ca and K, respectively.decreased greatly, and K exhibited more poisoning effect than Ca.

Keywords： Mn-CeOxsub>/Ti-pillared clay (PILC) low-temperature selective catalytic reduction(SCR) K and Ca poisoning effect

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Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4, Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Hexagonal CePO nanorods were prepared by a precipitation method and hexagonal CePO nanowires were prepared by hydrothermal synthesis at 150 °C. Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials. The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of N O than the Rh O supported on CePO nanorods. The stability of both catalysts as a function of time on stream was studied and the influence of the co-feed (CO , O , H O or O /H O) on the N O decomposition was also investigated. The samples were characterized by N adsorption-desorption, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron microscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption, and CO temperature-programmed desorption in order to correlate the physicochemical and catalytic properties.

Keywords： Rh2sub>O3sub> CePO4sub> N2sub>O decomposition

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Augmented hydrogen production by gasification of ball milled polyethylene with Ca(OH)

Giovanni Cagnetta, Kunlun Zhang, Qiwu Zhang, Jun Huang, Gang Yu

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1096-5

Abstract:

PE ball milling pretreatment induces higher H2sub> production

Ca(OH)2sub> reacts at solid state withPE boosting H2sub> and capturing CO2sub>.

Ca(OH)2sub> significantly reduces methanation

Keywords： Hydrogen production Gasification Plastic waste High energy ball milling

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CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2, Pages 273-280 doi: 10.1007/s11705-016-1563-5

Abstract: 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.

Keywords： Mn promotion nickel catalysts CO2sub> methanation co-methanation of CO and CO2sub>

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A Storage-Driven CO2sub> EOR for a Net-Zero Emission Target Article

Yueliang Liu, Zhenhua Rui

Engineering 2022, Volume 18, Issue 11, Pages 79-87 doi: 10.1016/j.eng.2022.02.010

Abstract: >2sub>) emissions.>2sub> emissions by storing CO2sub> in oil reservoirs.CO2sub> EOR—whose main target is to realize net-zero or even negative CO2sub> emissionsStorage-driven CO2sub> EOR is superior to conventional CO2sub> EOR in improving sweepingthan conventional CO2sub> EOR.

Keywords： CO2sub> EOR Net CO2sub> emissions Dimethyl ether Storage-driven CO2sub> EOR CO2sub> sequestration

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Al2sub>O3sub> and CeO2sub>-promoted MgO sorbents for CO2sub> capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1, Pages 83-93 doi: 10.1007/s11705-017-1691-6

Abstract: A series of Al O and CeO modified MgO sorbents was prepared and studied for CO sorption at moderate temperatures. The CO sorption capacity of MgO was enhanced with the addition of either Al O or CeO . Over Al O -MgO sorbents, the best capacity of 24.6 mg-CO /g-sorbent was attained at 100 °C, which was 61% higher than that of MgO (15.3 mg-CO /g-sorbent). The highest capacity of 35.3 mg-CO /g-sorbent was obtained over the CeO -MgO sorbents at the optimal temperature of 200 °C. Combining with the characterization results, we conclude that the promotion effect on CO sorption with the addition of Al O and CeO can be attributed to the increased surface area with reduced MgO crystallite size. Moreover, the addition of CeO increased the basicity of MgO phase, resulting in more increase in the CO capacity than Al O promoter. Both the Al O -MgO and CeO -MgO sorbents exhibited better cyclic stability than MgO over the course of fifteen CO sorption-desorption cycles. Compared to Al O , CeO is more effective for promoting the CO capacity of MgO. To enhance the CO capacity of MgO sorbent, increasing the basicity is more effective than the increase in the surface area.

Keywords： CO2sub> capture MgO sorbents Al2sub>O3sub> CeO2sub> flue gas

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ZnFe2sub>O4sub> deposited on BiOCl with exposed (001) and (010) facets for photocatalyticreduction of CO2sub> in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2, Pages 197-204 doi: 10.1007/s11705-016-1606-y

Abstract: 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.

Keywords： reduction of CO2sub> cyclohexanol ZnFe2sub>O4sub> deposited BiOCl facet composite

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The stabilization effect of Al2sub>O3sub> on unconventional Pb/SiO2sub> catalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1423-1429 doi: 10.1007/s11705-023-2315-y

Abstract: To enhance the stability, the traditional carrier Al2sub>O3sub> with a small amount, wasintroduced into Pb/SiO2sub> catalyst in this study.It has been proved that Al2sub>O3sub> can inhibit the reduction of PbO, and weaken theAs a result, 3Al15Pb/SiO2sub> catalyst exhibits a much higher stability up to more than 150 h.>2sub>O3sub> addition was also proposed.

Keywords： Pb/SiO2sub> Al2sub>O3sub> propane dehydrogenation propene stability

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Cu-doped Bi/Bi2sub>WO6sub> catalysts for efficient N2sub> fixation by photocatalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1412-1422 doi: 10.1007/s11705-023-2312-1

Abstract: it in photocatalytic N2sub> immobilization.>2sub>WO6sub> composite.>2sub>WO6sub>.>2sub>WO6sub>, respectively.>2sub>-to-NH3sub> conversion.

Keywords： Bi2sub>WO6sub> Cu doping work function photocatalytic N2sub> fixation charge

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Title Author Date Type Operation

Formation of CaCO hollow microspheres in carbonated distiller waste from Solvay soda ash plants

Journal Article

Laboratory study on high-temperature adsorption of HCl by dry-injection of Ca(OH)

Junjun TAN,Guohua YANG,Jingqiao MAO,Huichao DAI

Journal Article

An investigation of the CHOH and CO selectivity of CO hydrogenation over Cu–Ce–Zr catalysts

Journal Article

Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

WANG Jingang, HU Jinbang, WANG Daobin, DUAN Zhenya

Journal Article

Generation of enhanced stability of SnO/In(OH)/InP for photocatalytic water splitting by SnO protection

Journal Article

Metal-Free Hexagonal Perovskite High-Energetic Materials with NH3sub>OH⁺/NH2sub>NH3sub>⁺ as B-site Cations

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Journal Article

Effect of K and Ca on catalytic activity of Mn-CeO

Boxiong SHEN, Lidan DENG, Jianhong CHEN

Journal Article

Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>O decomposition

Huan Liu, Zhen Ma

Journal Article

Augmented hydrogen production by gasification of ball milled polyethylene with Ca(OH)

Giovanni Cagnetta, Kunlun Zhang, Qiwu Zhang, Jun Huang, Gang Yu

Journal Article

CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Journal Article

A Storage-Driven CO2sub> EOR for a Net-Zero Emission Target

Yueliang Liu, Zhenhua Rui

Journal Article

Al2sub>O3sub> and CeO2sub>-promoted MgO sorbents for CO2sub> capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

Journal Article

ZnFe2sub>O4sub> deposited on BiOCl with exposed (001) and (010) facets for photocatalyticreduction of CO2sub> in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

Journal Article

The stabilization effect of Al2sub>O3sub> on unconventional Pb/SiO2sub> catalyst

Journal Article

Cu-doped Bi/Bi2sub>WO6sub> catalysts for efficient N2sub> fixation by photocatalysis

Journal Article

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