Highly active hydrotreatment catalysts prepared with chelating agents

被引：97

作者：

Shimizu, T ^{[1
]}

Hiroshima, K ^{[1
]}

Honma, T ^{[1
]}

Mochizuki, T ^{[1
]}

Yamada, M ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Appl Chem, Aoba Ku, Sendai, Miyagi 98077, Japan

来源：

CATALYSIS TODAY | 1998年 / 45卷 / 1-4期

关键词：

hydrotreatment catalysts; chelating agents; NTA; EDTA; CyDTA; hydrodesulfurization; hydrogenation;

D O I：

10.1016/S0920-5861(98)00227-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hydrotreatment catalysts (Co-Mo/Al2O3, Ni-Mo/Al2O3 and Ni-W/Al2O3) were prepared by an impregnation method using an aqueous solution containing a chelating agent (nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA) or trans-1,2-cyclohexanediamine-N,N,N',N'-tetraacetic acid (CyDTA)). Co-Mo/Al2O3 and Ni-W/Al2O3 prepared with the chelating agents showed higher hydrodesulfurization (HDS) activity as well as hydrogenation (HYD) activity under high pressure (5.1 MPa) than those prepared without the chelating agents. Co-Mo/Al2O3 prepared with CyDTA showed ca. 70% higher HDS activity for benzothiophene (BT) than that prepared without it. HYD activity of Ni-W/Al2O3 for o-xylene was promoted about 65% by the addition of CyDTA. FT-IR of nitric oxide (NO) adsorbed on the sulfided Co-Mo/Al2O3's suggested that Co was highly dispersed over the catalyst surface when the catalysts were prepared with the chelating agents. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：271 / 276

页数：6

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