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| 1 | Progress on Porous Ceramic Membrane Reactors for Heterogeneous Catalysis over Ultrafine and Nano-sized Catalysts显示文摘Heterogeneous catalysts with ultrafine or nano particle size have currently attracted considerable attentions in the chemical and petrochemical production processes, but their large-scale applications remain challenging because of difficulties associated with their efficient separation from the reaction slurry. A porous ceramic membrane reactor has emerged as a promising method to solve the problem concerning catalysts separation in situ from the reaction mixture and make the production process continuous in heterogeneous catalysis. This article presents a review of the present progress on porous ceramic membrane reactors for heterogeneous catalysis, which covers classification of configurations of porous ceramic membrane reactor, major considerations and some important industrial applications. A special emphasis is paid to major considerations in term of application-oriented ceramic membrane design, optimization of ceramic membrane reactor performance and membrane fouling mechanism. Finally, brief concluding remarks on porous ceramic membrane reactors are given and possible future research interests are also outlined. | JIANG Hong MENG Lie CHEN Rizhi JIN Wanqin XING Weihong XU Nanping | 2013 | Chinese Journal of Chemical Engineering2013，21，2： | 9 |
| 2 | Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties显示文摘Three dimensional (3D) flower-like basic zinc carbonate constructed by multilayered nanoplates were rapidly prepared at room temperature through the direct precipitation method coupled with membrane dispersion technology, and porous ZnO with similar structures could be obtained after calcining the precursor. The structural properties of the products before and after the calcining process were characterized by SEM, TEM and XRD.The supersaturation of the reaction system due to the membrane dispersion played an important role in the formation of uniform Zn_5(CO_3)_2(OH)_6 precursors. A plausible mechanism was proposed for the formation of the flower-like ZnO assembled by nanoplates composed of nanoparticles. The obtained ZnO microspheres showed excellent photocatalytic properties, which could be attributed to the open structure and remarkable amount of porous nanoplates. | Feng Zhang Zhilong Xu Kun Wang Rizhi Chen Zhaoxiang Zhong Weihong Xing | 2018 | Chinese Journal of Chemical Engineering2018，26，10： | 5 |
| 3 | Deactivation mechanism of beta-zeolite catalyst for synthesis of cumene by benzene alkylation with isopropanol显示文摘The alkylation of benzene with isopropanol over beta-zeolite is a more cost-effective solution to cumene production. During the benzene alkylation cycles, the cumene selectivity slowly increased, while the benzene conversion presented the sharp decrease due to catalyst deactivation. The deactivation mechanism of betazeolite catalyst was investigated by characterizing the fresh and used catalysts. The XRD, SEM and TEM results show that the crystalline and particle size of the beta-zeolite catalyst almost remained stable during the alkylation cycles. The drop in catalytic activity and benzene conversion could be explained by the TG, BET,NH_3-TPD and GC–MS results. The organic matters mainly consisted of ethylbenzene, p-xylene and 1-ethyl-3-(1-methyl) benzene produced in the benzene alkylation deposited in the catalyst, which strongly reduced the specific surface area of beta-zeolite catalyst. Moreover, during the reaction cycles, the amount of acidity also significantly decreased. As a result, the catalyst deactivation occurred. To maintain the catalytic performance,the catalyst regeneration was carried out by using ethanol rinse and calcination. The deactivated catalyst could be effectively regenerated by the calcination method and the good catalytic performance was obtained. | Yefei Liu Yang Zou Hong Jiang Huanxin Gao Rizhi Chen | 2017 | Chinese Journal of Chemical Engineering2017，25，9： | 4 |
| 4 | Phenol hydrogenation to cyclohexanone over palladium nanoparticles loaded on charming activated carbon adjusted by facile heat treatment显示文摘Selective phenol hydrogenation is a green approach to produce cyclohexanone.It still remains a big challenge to prepare efficient supports of the catalysts for the phenol hydrogenation via a simple and cost-effective approach.Herein,a facile approach was developed,i.e.,direct calcination of activated carbon(AC)under argon at high temperature,to improve its structure and surface properties.The modified AC materials were supported with Pd nanoparticles(NPs)to fabricate the Pd/C catalysts.The as-prepared Pd/C600 catalyst exhibits superior catalytic performance in the phenol hydrogenation,and its turnover frequency(TOF)value is 199.2 h^-1,1.31 times to that of Pd/C-raw.The Pd/C600 catalyst presents both better hydrophobicity and more structural defects,contributing to the improved dispersibility in the reaction solution(phenol-cyclohexane),the better Pd dispersion and the smaller Pd size,which result in the enhancement of the catalytic performance.Furthermore,the as-prepared Pd/C600 catalyst shows a good recyclability. | Chunhua Zhang Guangxin Yang Hong Jiang Yefei Liu Rizhi Chen Weihong Xing | 2020 | Chinese Journal of Chemical Engineering2020，28，10： | 2 |
| 5 | A Submerged Membrane Reactor for Continuous Phenol Hydroxylation over TS-1显示文摘 | Lu Changjuan Chen Rizhi Xin8 Weihong | | 0，，07： | 1 |
| 6 | Nb_(2)O_(5)promoted Pd/AC catalyst for selective phenol hydrogenation to cyclohexanone显示文摘Phenol hydrogenation is a green route to prepare cyclohexanone,an intermediate for the production of nylon 66 and nylon 6.The development of high-performance catalysts still keeps a great challenge.Herein,the activated carbon(AC)was modified with an acidic material Nb_(2)O_(5)to adjust the microstructure and surface properties of AC,and the influences of the calcination temperature and Nb_(2)O_(5)content on the catalytic performance of the Pd/AC-Nb_(2)O_(5)catalysts for the phenol hydrogenation to cyclohexanone were investigated.The Nb_(2)O_(5)with proper content can be highly uniformly distributed on the AC surface,enhancing the acidity of the Pd/AC-Nb_(2)O_(5)catalysts with comparable specific surface area and Pd dispersion,thereby improving the catalytic activity.The hybrid Pd/AC-10 Nb_(2)O_(5)-500 catalyst exhibits the synergistic effect between the Pd nanoparticles and AC-10 Nb_(2)O_(5),which enhances the catalytic activity for the hydrogenation of phenol.Furthermore,the as-prepared Pd/AC-10 Nb_(2)O_(5)-500 catalyst shows good reusability during 7 reaction cycles. | Chunhua Zhang Zhengyan Qu Hong Jiang Rizhi Chen Weihong Xing | 2022 | Chinese Journal of Chemical Engineering2022，35，4： | 1 |
| 7 | Facile synthesis of hierarchically porous carbons by controlling the initial oxygen concentration in-situ carbonization of ZIF-8 for efficient water treatment显示文摘The state-of-the-art approaches for adjusting the structural characteristics of porous carbons are the aftertreatments, which are complicated and time consuming. In this work, a facile approach was developed, i.e., controlling the initial oxygen concentration in-situ during the direct carbonization of zeolitic imidazole framework-8(ZIF-8), to adjust the pore structure and prepare hierarchically porous carbons. The introduction of oxygen can significantly affect the crystalline and pore structures of porous carbons, and promote the pore widening and the formation of mesopores. An appropriate initial oxygen concentration can notably enhance the surface area and mesopore volume of porous carbon, and then improve the adsorption capacity toward methylene blue(MB) dye from water by 3.4 times. The developed approach is more efficient at lower carbonization temperature.Moreover, the introduction of oxygen can increase the ratio of HO\\C_O groups on the carbon surface, leading to enhanced interaction with MB molecules and higher adsorption capacity toward MB. The as-prepared porous carbons exhibit superior adsorption capacities toward MB dye as compared to the reported ZIF-8 derived carbons. These findings would aid the development of porous carbon materials with high performance. | Na Zhou Yan Du Chunyu Wang Rizhi Chen | 2018 | Chinese Journal of Chemical Engineering2018，26，12： | 1 |
| 8 | Continuous acetone ammoximation over TS-1 in a tubular membrane reactor 显示文摘 | Li Zhaohui Chen Rizhi Xing Weihong | 2010 | Industrial & Engineering Chemistry Research2010，49，14： | 1 |
| 9 | Poisoning effect of some nitrogen compounds on nano - sized nickel catalysts in p-nitrophenol hydrogenation 显示文摘 | DU Yan CHEN Hongling CHEN Rizhi | 2006 | Chem Eng J2006，125，： | 1 |
| 10 | Synthesis of p- aminophenol from p - nitrophenol over nano- sized nickel catalysts 显示文摘 | Du Yan Chen Hongling Chen Rizhi | 2004 | Appl Cat A: General2004，277，： | 1 |
| 11 | Continuous acetone ammoximation over TS-1 in a tubular membrane reactor显示文摘 | Li Zhaohui Chert Rizhi Xing Weihong | 2010 | Industrial & Engineering Chemistry Research2010，49，14： | 1 |
| 12 | Review: Hu Houxuan, 'Xia and the Tu State in the Oracle Inscriptions: A Consideration' Gudai Chengbang Shi Yanjiu (Studies on Ancient City States) Renmin Press, 1989, Pp. 340-353.显示文摘This article verified that the Tu state mentioned in the oracle inscriptions was the Xia people after the Xia Dynasty had been conquered by Tang, the first king of the Shang Dynasty m c.a. 16th century B.C. The state of Xia, which originated from Yu, was entitled 'Xia Hou'; its king was hence called 'Xia Hou Di' (Emperor of Xia Hou), e.g.'Xia Hou Di Qi'. The Xia people, together with the Yin (Shang) people, and the Zhou people, were the so-called 'people of San Dai' (Three Dynasties). As mentioned in 'Lunyu, Bayi', they founded the states, with the Xia people being associated with the pine, the Yin people with the cypress, and the Zhou people with the chestnut. | RiZhi | 1995 | Journal of Ancient Civilizations1995，10，0： | 1 |
| 13 | Integration of ceramic membrane microfiltration with powdered activated carbon for edvanced treatment of oil-in-water emulsion显示文摘 | Vang Yuqi Chen Rizhi Xing Weihong | | 0，，03： | 1 |
| 14 | Selective Reduction of Nitroarenes with Molybdenum Disulfide显示文摘商业 MoS2 被发现是为到有在温和条件下面的肼的相应苯胺的硝基苯的减小的高度选择的催化剂。MoS2 比为到相应苯胺的功能的硝基苯的减小的高贵金属催化剂便宜得多不仅,而且更选择。有卤化物的硝基苯(F, Cl, Br 并且我) 有选择地被减少,并且相应苯胺在优秀收益被获得,并且没有 dehalogenation 被检测。功能的组象 NH2 那样,哦,链烯组在 nitro 混合物的减小期间被容忍。p-chloronitrobenzene 的减小与肼分别地在 MoS2 和 Pd/C 上被学习。p-chloroaniline 的收益与在完整的变换的 Pd/C 比那与 MoS2 是高得多的。 | Lei Huang Pingfei Luo Man Xiong Rizhi Chen Yong Wang Weihong Xing Jun Huang | 2013 | Chinese Journal of Chemistry2013，31，8： | 1 |
| 15 | A composite coating by electrolysis-induced collagen self-assembly and calcium phosphate mineralization显示文摘 | Fan Yuwei Duan Ke Wang Rizhi | 2005 | Biomaterials2005，26，： | 1 |
| 16 | Continuous acetone ammoximation over TS-1 in a tubular membrane reactor显示文摘 | Li Zhaohui Chen Rizhi Xing Weihong | 2010 | Industrial & Engineering Chemistry Research2010，49，14： | 1 |
| 17 | Hollow ZIF-67-derived Co@N-doped carbon nanotubes boosting the hydrogenation of phenolic compounds to alcohols显示文摘The selective hydrogenation of highly toxic phenolic compounds to generate alcohols with thermal stability,environmental friendliness,and non-toxicity is of great importance.Herein,a series of Co-based catalysts,named Co@NCNTs,were designed and constructed by direct pyrolysis of hollow ZIF-67(HZIF-67)under H_(2)/Ar atmosphere.The evolution of the catalyst surface from the shell layer assembled by ZIF-67-derived particles to the in situ-grown hollow nitrogen-doped carbon nanotubes(NCNTs)with certain length and density is achieved by adjusting the pyrolysis atmosphere and temperature.Due to the synergistic effects of in situ-formed hollow NCNTs,well-dispersed Co nanoparticles,and intact carbon matrix,the as-prepared Co@NCNTs-0.10-450 catalyst exhibits superior catalytic performance in the hydrogenation of phenolic compounds to alcohols.The turnover frequency value of Co@NCNTs-0.10-450is 3.52 h^(-1),5.9 times higher than that of Co@NCNTs-0.40-450 and 4.5 times higher than that of Co@NCNTs-0.10-550,exceeding most previously reported non-noble metal catalysts.Our findings provide new insights into the development of non-precious metal,efficient,and cost-effective metal-organic framework-derived catalysts for the hydrogenation of phenolic compounds to alcohols. | Zhihao Guo Jiuxuan Zhang Lanlan Chen Chaoqun Fan Hong Jiang Rizhi Chen | 2024 | Chinese Journal of Chemical Engineering2024，66，2： | 0 |
| 18 | ANALYSIS OF DYNAMIC FLOW BEHAVIOR IN PITCHING MANEUVER显示文摘ANALYSIS OF DYNAMIC FLOW BEHAVIOR IN PITCHING MANEUVERChenNanqian;LiuRizhi;MaZongjiang(InstituteOfFluidMechanics,BeijingUnive... | Chen Nanqian Liu Rizhi Ma Zongjiang(Institute Of Fluid Mechanics, Beijing University Of Aeronauticsand Astronautics, Beijing, China, 100083) | 1996 | Chinese Journal of Aeronautics1996，9，4： | 0 |
| 19 | Preface for the special issue on regenerative medical materials显示文摘 | Shengmin Zhang (1) Rizhi Wang (2) | 2014 | Frontiers of Materials Science2014，8，1： | 0 |
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