Gallium Modified HUSY Zeolite as an Effective Co-support for NiMo Hydrodesulfurization Catalyst and the Catalyst's High Isomerization Selectivity
作者:Wenwu Zhou、Yasong Zhou、Qiang Wei、Lin Du、Sijia Ding、Shujiao Jiang、Yanan Zhang、Qing Zhang
DOI:10.1002/chem.201701307
日期:2017.7.12
NiMo/2GaY-ASA-A. The superior catalytic performance is related to the synergistic effect of the proper amount of medium and strong Brønsted acid sites. The compounds 3,6-DMDBT and 3,7-DMDBT (isomers of 4,6-DMDBT) and 3,4,6-TMDBT and tetra-methyl-DBT (transmethyl products) were detected simultaneously in the HDS product of 4,6-DMDBT for the first time over NiMo/GaY-ASA-A catalysts. Finally, a new reaction network
已经研究了金属改性的酸性辅助载体对高耐性有机硫化合物(如4,6-二甲基二苯并噻吩)的加氢脱硫(HDS)活性和异构化选择性的影响。通过新型水热合成方法成功合成了具有高Si / Al比和小晶粒尺寸的Y沸石晶体。将合成的Y沸石晶体进行离子交换并使其稳定。然后使用浸渍方法将制备的样品用不同的镓含量进行改性,以调节其酸度性质,并将这些改性的样品用作NiMo硫化物HDS催化剂的辅助载体。含有10%(重量)沸石Y的催化剂(经2%(重量)镓改性)(NiMo / 2GaY-ASA-A)表现出最高的HDS活性,其中有4,6-二甲基二苯并噻吩(4,-1。NiMo / 2GaY-ASA-A还表现出优异的异构化能力,其主要产物为3,4'-DMBP,4,4'DMBP和3,6-DMDBT,表明异构化途径是NiMo上的主要反应途径。 / 2GaY-ASA-A。优异的催化性能与适量的中等布朗斯台德酸位点和强布朗斯台德酸