Nickel鈥揝ilicide Colloid Prepared under Mild Conditions as a Versatile Ni Precursor for More Efficient CO2 Reforming of CH4 Catalysts
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- 作者：David Baudouin ; Ka茂 Chung Szeto ; Pierre Laurent ; Aimery De Mallmann ; Bernard Fenet ; Laurent Veyre ; Uwe Rodemerck ; Christophe Cop茅ret ; Chlo茅 Thieuleux
- 刊名：The Journal of the American Chemical Society
- 出版年：2012
- 出版时间：December 26, 2012
- 年：2012
- 卷：134
- 期：51
- 页码：20624-20627
- 全文大小：292K
- 年卷期：v.134,no.51(December 26, 2012)
- ISSN：1520-5126
文摘
Preparing highly active and stable non-noble-metal-based dry reforming catalysts remains a challenge today. In this context, supported nickel nanoparticles with sizes of 1.3 卤 0.2 and 2.1 卤 0.2 nm were synthesized on silica and ceria, respectively, via a two-step colloidal approach. First, 2-nm nickel鈥搒ilicide colloids were synthesized from Ni(COD)2 and octylsilane at low temperature; they were subsequently dispersed onto supports prior to reduction under H2. The resulting catalysts display high activity in dry reforming compared to their analogues prepared using conventional approaches, ceria providing greatly improved catalyst stability.