Solvent Free Synthesis of PdZn/TiO2 Catalysts for the Hydrogenation of CO2 to Methanol

被引：42

作者：

Bahruji, Hasliza ^{[1
]}

Esquius, Jonathan Ruiz ^{[1
]}

Bowker, Michael ^{[1
,2
]}

Hutchings, Graham ^{[1
]}

Armstrong, Robert D. ^{[1
]}

Jones, Wilm ^{[1
,2
]}

机构：

[1] Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales

[2] UK Catalysis Hub, Res Complex Harwell, Harwell OX11 0FA, Oxon, England

来源：

TOPICS IN CATALYSIS | 2018年 / 61卷 / 3-4期

基金：

英国工程与自然科学研究理事会;

关键词：

CO2; hydrogenation; Methanol; PdZn alloy; Green methanol; Hydrogen storage; OXYGEN VACANCIES; PDZN ALLOY; CONVERSION; XPS; NANOPARTICLES; METHANATION; STABILITY; GAS;

D O I：

10.1007/s11244-018-0885-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalytic upgrading of CO2 to value-added chemicals is an important challenge within the chemical sciences. Of particular interest are catalysts which are both active and selective for the hydrogenation of CO2 to methanol. PdZn alloy nanoparticles supported on TiO2 via a solvent-free chemical vapour impregnation method are shown to be effective for this reaction. This synthesis technique is shown to minimise surface contaminants, which are detrimental to catalyst activity. The effect of reductive heat treatments on both structural properties of PdZn/TiO2 catalysts and rates of catalytic CO2 hydrogenation are investigated. PdZn nanoparticles formed upon reduction showed high stability towards particle sintering at high reduction temperature with average diameter of 3-6 nm to give 1710 mmol kg(-1) h of methanol. Reductive treatment at high temperature results in the formation of ZnTiO3 as well as PdZn, and gives the highest methanol yield.

引用

页码：144 / 153

页数：10

共 31 条

[1] Utilisation of CO2 as a chemical feedstock:: opportunities and challenges [J].