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attrition resistance,a sporadically studied factor in aqueous adsorption:Status quo and research outlook towards creating better adsorbents

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颗粒学报:英文版 2023年第6期77卷 71-78页

作者： Ackmez Mudhoo Khim Hoong Chu Prasenjit Mondal Department of Chemical and Environmental Engineering Faculty of EngineeringUniversity of MauritiusRéduit80837Mauritius Honeychem Research NewtownWellington6021New Zealand Department of Chemical Engineering Indian Institute of Technology RoorkeeRoorkeeUttarakhand247667India

attrition resistance in an adsorbent is one measure of its mechanical *** quantifies its ability to resist the impact of frictional forces generated in a milieu where hydrodynamic agitation ***,attrition resistance has been only sporadically examined in adsorbents used to remove aqueous *** attrition is relevant in aqueous adsorption process design,this review discusses the quan-tification of attrition resistance,variability in loss due to attrition across adsorbents,and the implications of attrition on adsorption ***,some key research opportunities that could be explored for a better understanding of attrition in real-scale water purification are *** is inferred that sub-stantial research and development still needs to be accomplished to better understand the attrition resistance-adsorbent behavior within real-scale aqueous adsorption *** results can be harnessed to design and produce more robust,efficient and cost-effective adsorbents.

关键词： attrition resistance Adsorbent Morphology change Aqueous adsorbate

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attrition resistant catalyst for dimethyl ether synthesis in fluidized-bed reactor

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第9期9卷 1288-1295页

作者： Li-hua TENG Institute of Biology and Environmental Science Zhejiang Wanli University Ningbo 315100 China

Fluidized-bed reactor is a candidate for dimethyl ether （DME） synthesis from syngas because of its excellent heat removal capability. In order to improve the attrition resistance of catalyst, an amount of silica sol as binder was added to the catalyst composed of methanol synthesis component CuO/ZnO/Al2O3 and methanol dehydration component HZSM-5, which was prepared by coprecipitation and shaped by spray drying to get spherical particles. The effect of silica sol on the catalytic activity was investigated in a fixed-bed flow microreactor. Based on the experiment results, silica sol in the range of 0-20wt% had small effect on the catalytic activity. Generally, the CO conversion and DME yield decreased with the increase in concentration of silica sol, while the attrition resistance of catalysts increased with increasing silica sol, indicating that it was feasible to improve the attrition resistance without greatly sacrificing the activity of catalyst. In addition, the characterizations of catalysts were carried out using Brunauer-Emmett-Teller （BET）, X-ray powder diffraction （XRD） and temperature programmed reduction （TPR）.

关键词： Dimethyl ether (DME) attrition resistance Catalytic activity Silica sol

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Study on attrition Resistant Catalysts for Dimethyl Ether Synthesis through Single-step from Syngas

Study on Attrition Resistant Catalysts for Dimethyl Ether Sy...

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The 12th Asian Pacific Confederation of Chemical Engineering Congress

作者： Bai-Chuan Yang Hai-Peng Zhang Wei Li~* Wen-De Xiao State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

Fluidization catalysts for proesses such as dimethyl ether(DME)synthesis through single-step from syngas must exhibit high attrition *** order to improve the attrition resistance of bi- functional catalysts,silica sol... 详细信息

关键词： dimethyl ether attrition resistance bifunctional catalysts acidic silica sol

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