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Facile molybdenum and aluminum recovery from spent hydrogenation catalyst

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Industrial catalyst waste has emerged as a hazardous pollutant that requires safe and proper disposal after the unloading process.Finding a valuable and sustainable strategy for its treatment is a significant challenge compared to traditional methods.In this study,we present a facile method for the recovery of molybdenum and aluminum contents from spent Mo-Ni/Al2O3 hydrogenation catalysts through crys-tallization separation and coprecipitation.Furthermore,the recovered molybdenum and aluminum are utilized as active metals and carriers for the preparation of new catalysts.Their properties were thor-oughly analyzed and investigated using various characterization techniques.The hydrogenation activity of these newly prepared catalysts was evaluated on a fixed-bed small-scale device and compared with a reference catalyst synthesized from commercial raw reagents.Finally,the hydrogenation activity of the catalysts was further assessed by using the entire distillate oil of coal liquefaction as the raw oil,spe-cifically focusing on denitrogenation and aromatic saturation.This work not only offers an effective solution for recycling catalysts but also promotes sustainable development.

Waste treatmentAluminaHydrogenationCatalystCrystallizationPrecipitation

Zhenhui Lv、Jianan Li、Dong Xue、Tao Yang、Gang Wang、Chong Peng

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State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China

Dalian Research Institute of Petroleum and Petrochemicals,SINOPEC,Dalian 116041,China

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesState Key Laboratory of Heavy Oil Processing,China University of Petroleum

2023YE415076012212280722378038DUT23RC3044WX20230149

2024

10.1016/j.cjche.2024.01.006

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.69(5)