College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, PR China; School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore.
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore.
J Colloid Interface Sci. 2016 Jan 15;462:48-55. doi: 10.1016/j.jcis.2015.09.050. Epub 2015 Sep 25.
A new type of porous carbon with an interconnected trimodal pore system is synthesized by a nanocasting method using nanoparticulated bimodal micro-mesoporous silica particles as the template. The synthesized template and carbon material are characterized using transmission electron microscopy (TEM), field emission electron scanning microscopy (FESEM) and nitrogen adsorption-desorption test. The synthesized carbon material has an extremely high surface area, a large pore volume and an interconnected pore structure, which could provide abundant active sites and space for chemical reactions and minimize the diffusion resistance of the reactants. The resulting carbon is used as the catalyst for hydrogen production by the thermal decomposition of methane. The catalytic results show that the as-synthesized carbon in this study produces much higher methane conversion and hydrogen yield than the commercial carbon materials.
一种新型的具有互联三孔结构的多孔碳，通过纳米铸造法，以纳米级双模态微孔-介孔硅颗粒为模板合成。采用透射电子显微镜（TEM）、场发射电子扫描显微镜（FESEM）和氮气吸附-脱附测试对合成的模板和碳材料进行了表征。合成的碳材料具有极高的比表面积、大的孔体积和互联的孔结构，可为化学反应提供丰富的活性位点和空间，同时最小化反应物的扩散阻力。所得碳用作甲烷热分解制氢的催化剂。催化结果表明，与商业碳材料相比，本研究中合成的碳使甲烷转化率和产氢率大大提高。
