摘要：This article proposes a novel organic additive 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) for the preparation of NiW/Al2O3 efficient hydrodesulfurization (HDS) catalysts. The effects of HEDP on the nature of the tungsten and nickel species supported on the support surface after drying and calcination steps were revealed by employing ultraviolet–visible spectroscopy (UV–Vis), Raman spectroscopy, N2 adsorption–desorption and H2 temperature programmed reduction (H2-TPR). While the slab morphology and the proportion of NiWS phases were determined by X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HRTEM). Finally, dibenzothiophene (DBT) was used as a probe to evaluate the effects of HEDP modification on the catalytic performance of the prepared catalyst. The results indicate that the addition of HEDP can facilitate the formation of more polymerized tungsten oxide species and improve the availability of surface nickel atoms. The weakened interaction between active metals and support generate higher stacking numbers and shorter slab lengths among WS2 crystals on the corresponding catalyst, promote the sulfidation of both Ni and W species and enhance the proportion of NiWS phase. The catalytic evaluation results show that the HEDP-modified catalyst exhibits efficient HDS activity and higher DDS selectivity compared to the phosphoric acid-modified reference catalyst, which is attributed to a large number of accessible NiWS active sites. The present work relates the addition of organic additives with the formation of NiW species and the catalytic activity. The results highlight that the addition of HEDP is an effective strategy to improve the performance of HDS catalysts. ? 2023 Elsevier Ltd

ISSN号：0016-2361

卷、期、页：卷340

发表日期：2023-05-15

影响因子：0.000000

期刊分区（SCI为中科院分区）：一区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Fuel

参与作者：刘晓东

通讯作者：徐朱松,赵鲁媛,康桓齐,赵鲁媛,黄文斌

第一作者：周亚松,魏强

论文类型：期刊论文

论文概要：徐朱松,赵鲁媛,康桓齐,赵鲁媛,刘晓东,黄文斌,周亚松,魏强，Effect of organic phosphorus addition on the state of active metal species and catalytic performance of NiW/Al2O3 hydrodesulfurization catalyst，Fuel，2023，卷340

论文题目：Effect of organic phosphorus addition on the state of active metal species and catalytic performance of NiW/Al2O3 hydrodesulfurization catalyst