杨恒权教授课题组与中科院煤化所王建国研究员课题组合作在Journal of Materials Chemistry (影响因子5.901)发表研究论文
杨恒权教授课题组与中科院煤化所王建国研究员课题组合作在Journal of Materials Chemistry (影响因子5.901)发表研究论文
Encapsulation of a catalytically active core with a nanoporous shell: a new strategy for designing size-selective catalysts
Hengquan Yang (杨恒权)*，Yanzhu Chong (种延竹)，Xuekuan Li (李学宽)， Hui Ge(葛辉)，Weibin Fan (樊卫斌)*， Jianguo Wang(王建国)
J. Mater. Chem., 2012, 22, 9069
A novel strategy to synthesize a size-selective catalyst consisting of a Pd-containing silica core and an outer silica shell with controllable pore size, was developed. Such intended structures were confirmed with N2 sorption, XRD, TEM and SEM. The pore sizes on the shell could be further tailored through silylation with organosilanes with variable chain lengths. This intriguing nanostructured catalyst showed a high activity in the aerobic oxidation of alcohols. Impressively, when the pores on the shell were tailored to particular sizes the catalyst exhibited size-selective catalysis, and the substrate molecules with only a slight difference in molecular size could be discriminated. This study potentially supplies a new approach for constructing size-selective catalysts.
