The effect of composition of the ruthenium precursors and heat treatment conditions on the activity of Ru-Ba/Sibunit catalysts for ammonia synthesis

被引：8

作者：

Smirnova, N. S. ^{[3
]}

Iost, K. N.

Temerev, V. L. ^{[1
]}

Gulyaeva, T. I. ^{[1
]}

Trenikhin, M. V. ^{[1
]}

Muromtsev, I. V. ^{[1
]}

Khramov, E. V. ^{[2
]}

Zubavichus, Y. V. ^{[2
]}

Shlyapin, D. A. ^{[1
]}

Tsyrul'nikov, P. G. ^{[1
]}

机构：

[1] RAS, Inst Hydrocarbons Proc, SB, Neftezavodskaya St 54, Omsk 644040, Russia

[2] Kurchatov Inst, Natl Res Ctr, Pl Kurchatova 1, Moscow 123182, Russia

[3] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Leninsky Prospect 31, Moscow 119991, Russia

来源：

MOLECULAR CATALYSIS | 2017年 / 433卷

关键词：

Ammonia synthesis; Supported ruthenium catalysts; Barium promoter; Sibunit; SUPPORTED RUTHENIUM; CHEMISORPTIVE PROPERTIES; THERMAL-DECOMPOSITION; REDUCTION TEMPERATURE; BARIUM PROMOTER; CARBON SUPPORT; CHLORINE; PERFORMANCE; METHANATION; KINETICS;

D O I：

10.1016/j.mcat.2016.12.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of composition of the chlorine-containing precursors of ruthenium and heat treatment conditions on the preparation of catalysts supported on carbon composite Sibunit for the ammonia synthesis was studied. The activity of Ru-Ba/Sibunit samples was shown to depend on ruthenium dispersion and residual chlorine content in the catalyst. The removal of outer-sphere chloride ions from ammonia complexes of ruthenium via ionic exchange and the replacement of hydrogen reduction of the Ru precursor by calcination in an inert atmosphere prevent sintering and agglomeration of the active component particles, thus enhancing the catalyst activity. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：235 / 241

页数：7

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