Ruthenium Ammonium Chloride as a Precursor for the Preparation of High Activity Catalysts for Ammonia Synthesis

被引：11

作者：

Ni Jun ^{[1
]}

Wang Rong ^{[1
]}

Lin Jianxin ^{[1
]}

Wei Kemei ^{[1
]}

机构：

[1] Fuzhou Univ, Natl Res Ctr Chem Fertilizer Catalysts, Fuzhou 350002, Fujian, Peoples R China

来源：

CHINESE JOURNAL OF CATALYSIS | 2009年 / 30卷 / 03期

基金：

中国国家自然科学基金;

关键词：

ruthenium ammonium chloride; precursor; ruthenium; supported catalyst; ammonia synthesis; ACTIVATED CARBONS; RU/C CATALYSTS; BARIUM; SUPPORT; KINETICS; PROMOTERS; DESORPTION; CESIUM; BASE; CS;

D O I：

10.1016/S1872-2067(08)60096-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Ruthenium ammonium chloride, Ru(NH3)(5)Cl-3, was prepared by the chemical reaction of ruthenium chloride with hydrazine hydrate and used as a novel ruthenium precursor for the preparation of activated carbon (AC)-supported Ru catalysts for ammonia synthesis. The results from TEM and CO chemisorption show that the Ru nanoparticles on the RuN/AC catalyst prepared from the Ru(NH3)(5)Cl-3 precursor have much higher dispersion and more uniform size distribution than that on the Ru/AC catalyst from the RuCl3 precursor. The activity of the RuN/AC catalyst for ammonia synthesis was increased by more than 10% compared with the Ru/AC catalyst under the reaction conditions of 10 MPa and 10 000 h(-1).

引用

页码：185 / 190

页数：6

共 33 条

[1] Mechanochemical synthesis of nanocrystalline TiO2 from liquid TiCl4 [J].

Billik, P. ;

Plesch, G. .

SCRIPTA MATERIALIA, 2007, 56 (11) :979-982

[2] Surface oxides on carbon and their analysis: a critical assessment [J].

Boehm, HP .

CARBON, 2002, 40 (02) :145-149

[3] Modification of the surface chemistry of activated carbons [J].

Figueiredo, JL ;

Pereira, MFR ;

Freitas, MMA ;

Orfao, JJM .

CARBON, 1999, 37 (09) :1379-1389

[4] Carbon-supported promoted Ru catalyst for ammonia synthesis [J].

Forni, L ;

Molinari, D ;

Rossetti, I ;

Pernicone, N .

APPLIED CATALYSIS A-GENERAL, 1999, 185 (02) :269-275

[5] The effect of promoters on the electronic structure of ruthenium catalysts supported on carbon [J].

Guraya, M ;

Sprenger, S ;

Rarog-Pilecka, W ;

Szmigiel, D ;

Kowalczyk, Z ;

Muhler, M .

APPLIED SURFACE SCIENCE, 2004, 238 (1-4) :77-81

[6] Effect of activated carbon on the dispersion of Ru and K over supported Ru-based catalyst for ammonia synthesis [J].

Han, Wenfeng ;

Liu, Huazhang ;

Zhu, Hong .

CATALYSIS COMMUNICATIONS, 2007, 8 (03) :351-354

[7]

Han WF, 2004, CHINESE J CATAL, V25, P194

[8] Support effect and active sites on promoted ruthenium catalysts for ammonia synthesis [J].

Hansen, TW ;

Hansen, PL ;

Dahl, S ;

Jacobsen, CJH .

CATALYSIS LETTERS, 2002, 84 (1-2) :7-12

[9] Atomic-resolution in situ transmission electron microscopy of a promoter of a heterogeneous catalyst [J].

Hansen, TW ;

Wagner, JB ;

Hansen, PL ;

Dahl, S ;

Topsoe, H ;

Jacobsen, CJH .

SCIENCE, 2001, 294 (5546) :1508-1510

[10] Regularities in the temperature-programmed desorption spectra of CO2 and CO from activated carbons [J].

Haydar, S ;

Moreno-Castilla, C ;

Ferro-García, MA ;

Carrasco-Marín, F ;

Rivera-Utrilla, J ;

Perrard, A ;

Joly, JP .

CARBON, 2000, 38 (09) :1297-1308

← 1 2 3 4 →