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论文类型：期刊论文

发表时间：2017-08-01

发表刊物：JOURNAL OF CATALYSIS

收录刊物：SCIE、EI

卷号：352

页面范围：557-561

ISSN号：0021-9517

关键字：WP; Hydrodesulfurization; XPS; Sulfur-containing phase; NH3

摘要：The X-ray photoelectron spectroscopy characterization of a bulk WP hydrodesulfurization (HDS) catalyst demonstrated that the actual active surface phase of WP in the HDS of dibenzothiophene (DBT) is' a sulfur-containing phase. This tungsten phosphosulfide phase formed faster than the molybdenum phosphosulfide phase, but possessed a lower sulfur content than the corresponding Ni2P and MoP phases. NH3 was the dominant nitrogen-containing species detected in the WP catalyst after simultaneous HDS and hydrodenitrogenation reactions. NH3 decreased the DBT conversion strongly but less than piperidine, indicating that not only N-containing compounds but also NH3 inhibits the HDS activity of WP. (C) 2017 Published by Elsevier Inc.