Study for structure and catalysis of supported metal nanoparticles

2016 Fiscal Year Final Research Report

• Project/Area Number: 15H06468
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Nanomaterials chemistry
• Research Institution: Kyushu University
• Principal Investigator: Murayama Haruno 九州大学, 理学研究院, 准教授 (90426528)
• Co-Investigator(Renkei-kenkyūsha): TOKUNAGA Makoto 九州大学, 大学院理学研究院, 教授 (40301767)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Keywords: 金属ナノ粒子調製 / 選択的水素化反応

Outline of Final Research Achievements

Conventional impregnation methods are useful for preparing supported metal nanoparticles except small gold (Au) nanoparticles. We developed a novel simple and easy impregnation method using Au complexes coordinated with β-alanine as precursors. The chloride-free Au complexes were successful for the preparing small Au nanoparticles, which exhibited an average diameter less than 3 nm on the basis of TEM observations, on various supports including silica, which were difficult to be applied for conventional methods. Thermal behavior of the Au complex was investigated by thermogravimetry-differential thermal analyses and in situ X-ray absorption fine structure (XAFS). Lower decomposition and reduction temperature of the Au complex prevented Au atoms from aggregating and from following growth of Au particles. The prepared Au/SiO2 showed high selectivity for hydrogenation of 1-nitro-4-vinylbenzene into 1-ethyl-4-nitorobenzene.

Free Research Field

触媒化学