摘要：A series of Al-SBA-15 (Al-15) materials was prepared by direct synthesis method with a broad range of Si/Al molar ratios (X = 40, 20, 10, 5, and 2.5), and the corresponding NiMoS/Al-15(X) catalysts were used to perform the hydrodesulfurization (HDS) reaction with dibenzothiophene (DBT). The prepared samples were characterized by N-2 physisorption, ICP-OES, powder XRD, Al-27 MAS NMR, H-2-TPR, pyridine-FTIR and HRTEM. Al-SBA-15(10) had the highest number of Bronsted acid sites and the total acid density of silica-alumina supports increased with Al loading. The enhanced acidity of the Al-15-type materials led to higher catalyst activity compared to those of NiMo/gamma-Al2O3 and NiMo/SBA-15. A suitable stacking of the NiMoS slabs favors the hydrogenation reaction of DBT while introduction of Al into the silica supports can help the hydrogenolysis of the C-S bond. The acid density and surface roughness of the support (the surface periodicity of the support in the atomic scale) impact the morphology of the active phase, which, in turn, affects the reaction selectivity of DBT HDS.

关键字：MOLYBDENUM SULFIDE CATALYSTS HYDROTREATING CATALYSTS DEEP HYDRODESULFURIZATION CITRIC-ACID NIMO/SBA-15 CATALYSTS GAMMA-ALUMINA HYD REACTIONS SI/AL RATIO SBA-15 PERFORMANCE

ISSN号：2046-2069

卷、期、页：卷: 6 期: 108 页: 106680-106689

发表日期：2016-01-01

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：RSC ADVANCES

通讯作者：蒋淑娇,丁思佳,周文武,单亚成

第一作者：周亚松,魏强

论文类型：期刊论文

论文概要：蒋淑娇,周亚松,丁思佳,魏强,周文武,单亚成，Effect of direct synthesis Al-SBA-15 supports on the morphology and catalytic activity of the NiMoS phase in HDS of DBT，RSC ADVANCES，2016，卷: 6 期: 108 页: 106680-106689

论文题目：Effect of direct synthesis Al-SBA-15 supports on the morphology and catalytic activity of the NiMoS phase in HDS of DBT