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Self-assembled multifunctional Fe_(3)O_(4) hierarchical microspheres: high-efficiency lithium-ion battery materials and hydrogenation catalysts

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Science China Materials 2021年第5期64卷 1058-1070页

作者： Konglin Wu Min Ling Peiyuan Zeng Liang Zhang Tao Wu Pingli Guan Weng-Chon Cheong Zheng Chen Zhen Fang Xianwen Wei Institute of Clean Energy and Advanced Nanocatalysis(iClean) School of Chemistry and Chemical EngineeringAnhui University of TechnologyMaanshan 243002China College of Chemistry and Materials Science Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutesthe Key Laboratory of Functional Molecular SolidsMinistry of EducationAnhui Normal UniversityWuhu 241002China Department of Physics and Chemistry Faculty of Science and TechnologyUniversity of MacaoMacaoChina

Self-assembled Fe_(3)O_(4)hierarchical microspheres(HMSs) were prepared by a one-pot synchronous reduction–self-assembling (SRSA) hydrothermal *** this simple and inexpensive synthetic process,only glycerol,water,and a single iron source (potassium ferricyanide (K3[Fe(CN)6]))were employed as reactants without additional reductants,surfactants,or *** iron source,K3[Fe(CN)6],and glycerol significantly affected the synthesis of Fe_(3)O_(4)***_(3)O_(4)HMSs with a self-assembled spherical shape readily functioned as high-performance anode materials for lithiumion batteries with a specific capacity of>1000 mA h g^(-1)at0.5 A g^(-1)after 270 *** charging and discharging results revealed that Fe_(3)O_(4)HMSs displayed good reversible performance (>1000 mA h g^(-1)) and cycling stability (700 cycles) at 0.5 A g^(-1).Furthermore,as multifunctional materials,the as-obtained Fe_(3)O_(4)HMSs also exhibited high saturation magnetization (99.5 emu g^(-1)) at room temperature (25°C) and could be further employed as efficient and magnetically recyclable catalysts for the hydrogenation of nitro compounds.

关键词： iron oxide hierarchical structure energy storage material lithium-ion battery hydrogenation catalyst

Effect of Carrier Processing Temperature on Its Properties for Adsorption of Active Metals

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China Petroleum Processing & Petrochemical Technology 2012年第2期14卷 1-6页

作者： Zeng Shuangqin Yang Qinghe Li Dingjiangyi Nie Hong Li Dadong Research Institute of Petroleum Process Beijing 100083

The influence of the carrier pseudo-boehmite （PB）, which was impregnated with a Ni-Mo-P solution under over- saturation conditions and treated at different temperatures, on its property for adsorption of active metals （Ni, Mo） was studied. The results showed that the amount for adsorption of active metal was decreased with an increasing treatment tem- perature of the carrier. After phase transition of the carrier PB to γ-Al2O3, its capacity for adsorption of active metals was significantly reduced. The difference in properties for adsorption of active metals （Ni, Mo） by PB dried at 120℃ and γ-Al2O3 calcined at 600℃ was studied in detail. The results suggested that the ability of the PB carrier to adsorb metals was higher than that of theγ-Al2O3 carrier. Especially, the ratio of chemically adsorbed metals on the PB support was much higher than 3＇-alumina. The chemical adsorption sites on the PB carrier were proved to be much more than those on the γ-Al2O3 carrier. Ni and Mo chemical adsorption sites differed a lot on the carrier possibly because of the difference in chemical adsorption sites.

关键词： pseudo-boehmite γ-Al2O3 hydrogenation catalyst carrier adsorption

Advances in the production technology of hydrogen peroxide

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Chinese Journal of Catalysis 2020年第7期41卷 1039-1047页

作者： Guohua Gao Yanan Tian Xiaoxiao Gong Zhiyong Pan Keyong Yang Baoning Zong Research Institute of Petroleum Processing SinopecBeijing 100083China

This article mainly summarizes various aspects of hydrogen peroxide(H2O2)production through the anthraquinone route,including hydrogenation catalysts,working solution,regeneration technique,hydrogenation reactors,and environmental *** advances and breakthrough of SINOPEC in the production of H2O2 through the anthraquinone route is presented in this review,highlighting recent innovative technology on these aspects developed *** technical prospect and scientific challenges associated with the direct synthesis method from hydrogen and oxygen are also briefly discussed.

关键词： Hydrogen peroxide Anthraquinone auto-oxidation hydrogenation of anthraquinone hydrogenation catalyst Production Technology

Immobilization of Homogeneous Catalysis on Phosphinated MCM-41

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Chemical Research in Chinese Universities 2001年第Z1期17卷 124-页

作者： SHYU Shin-Guang Institute of Chemistry Academia Sinica

Homogeneous catalysis Rh(PPh3)3Cl immobilized on MCM-41 modified with (OEt)3Si(CH2)3PPh2 results in a stable hydrogenation catalyst with turn over frequency (TOF) three times higher than that of Rh(PPh3)3C1 in the hydrogenation of cyclohexene. Leaching of the catalyst is only a minor factor with leaching rate 0.04 % for each cycle. However, immobilization of Rh(PPh3)2(CO)C1 on similar support can only have catalytic hydroformylation properties for the first few cycles. Decay of the catalyst is due to largh leaching rate with totally 22.4 % of Rh leached for the first three cycles.

关键词： leaching rate hydrogenation catalyst