Synthesis of size-controlled Pt/C/PTFE hydrophobic catalyst pellets in a capillary-based microfluidic system
Synthesis of size-controlled Pt/C/PTFE hydrophobic catalyst pellets in a capillary-based microfluidic system
复制标题
在基于毛细管的微流体系统中合成尺寸受控的 Pt/C/PTFE 疏水性催化剂颗粒
DOI：
10.1016/j.ijhydene.2014.08.045
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发表时间：
2014-10
影响因子：
7.2
通讯作者：
常振旗
中科院分区：
文献类型：
--
作者：
常振旗
采用微流控技术制备了用于氢-水同位素交换反应的粒径可控Pt/C/PTFE疏水催化剂球团。通过控制分散相、连续相的流速和连续相的粘度，制备出粒径分布较窄（CV < 5%）的微流控系统，并将微流控系统的粒径精确控制在150 ~ 1500 μm之间。在不使用任何化学还原剂的情况下，通过γ射线诱导还原，在多孔PTFE/C载体中合成了分布均匀的约3 nm的铂纳米颗粒。介绍了聚乙烯醇（PVA）作为固化剂和制孔剂的制备方法。利用扫描电子显微镜（SEM）和BET仪器对制备的催化剂球团的孔隙率进行了表征，并通过观察水与催化剂球团表面的接触角来考察催化剂的疏水性。
The size-controlled Pt/C/PTFE hydrophobic catalyst pellets employed in the hydrogen–water isotope exchange reaction were prepared using microfluidic technology. An assembly–disassembly capillary-based microfluidic system was demonstrated for easy fabrication of narrow size-distribution catalyst beads (CV < 5%), and the size of the beads were precisely controlled in the range of 150–1500 μm by manipulating the flow rate of the disperse and continuous phase, as well as the continuous phase viscosity. Approximately 3 nm platinum nanoparticles with uniform dispersion in a porous PTFE/C support were synthesized by γ-ray-induced reduction without using any chemical reducing agents. Polyvinyl alcohol (PVA) was introduced as both a solidified agent and porogen in the fabrication process. The porosity of the as-prepared catalyst pellets were characterized using a scanning electron microscope (SEM) and a BET instrument, and the hydrophobicity of the catalyst was examined by observation of the contact angle between water and the surface of the catalyst beads.
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影响因子：
13.6
作者：
Sheng Hu;J. Hou;Liang-ping Xiong;Kuiping Weng;Xingbi Ren;Yangming Luo
通讯作者：
Sheng Hu;J. Hou;Liang-ping Xiong;Kuiping Weng;Xingbi Ren;Yangming Luo
影响因子：
1.7
作者：
I. Popescu;G. Ionita;I. Ştefănescu;C. Varlam;D. Dobrinescu;I. Faurescu
通讯作者：
I. Popescu;G. Ionita;I. Ştefănescu;C. Varlam;D. Dobrinescu;I. Faurescu
DOI：
10.1109/fusion.2003.1426635
发表时间：
2003-10
期刊：
20th IEEE/NPSS Symposium onFusion Engineering, 2003.
影响因子：
--
作者：
J. Braet;A. Bruggeman
通讯作者：
J. Braet;A. Bruggeman
影响因子：
3.7
作者：
J. Kugai;Toshiharu Moriya;S. Seino;T. Nakagawa;Y. Ohkubo;H. Nitani;K. Ueno;T. Yamamoto
通讯作者：
J. Kugai;Toshiharu Moriya;S. Seino;T. Nakagawa;Y. Ohkubo;H. Nitani;K. Ueno;T. Yamamoto
影响因子：
7.2
作者：
Sheng Hu;Liang-ping Xiong;Xingbi Ren;Changbing Wang;Yangming Luo
通讯作者：
Sheng Hu;Liang-ping Xiong;Xingbi Ren;Changbing Wang;Yangming Luo