Supercritical water synthesis of nano-particle catalyst on TiO2 and its application in supercritical water gasification of biomass
Supercritical water synthesis of nano-particle catalyst on TiO2 and its application in supercritical water gasification of biomass
复制标题
TiO2纳米颗粒催化剂超临界水合成及其在生物质超临界水气化中的应用
DOI：
10.1080/17458080.2016.1262066
复制
发表时间：
2017-01
影响因子：
2.8
通讯作者：
Guo Liejin
中科院分区：
文献类型：
--
作者：
Jin Hui;Zhao Xiao;Su Xiaohui;Zhu Chao;Cao Changqing;Guo Liejin
摘要超临界水催化气化制氢是一种很有前途的生物质资源利用方式。超临界水不仅为生物质气化提供了均匀、快速的反应环境，而且也会引起催化剂团聚问题。为了制备活性高、稳定性好的生物质超临界水气化催化剂，采用超临界水合成法，对催化剂的制备方法进行了研究。将Ni、Co、Zn和Cu金属元素负载到TiO 2颗粒上，证明TiO 2颗粒在超临界水中具有节律性热稳定性。纳米粒子也被成功制造出来。通过气相色谱/质谱联用仪（GC/MS）、扫描电子显微镜（SEM）、能谱仪（EDS）和X射线衍射（XRD）等分析手段，发现金属催化剂具有均匀的球形结构，直径约为30 nm。超临界水热法合成的金属催化剂具有一定的催化效果。Ni催化剂的稳定性最好，Zn催化剂的产氢率最高。
ABSTRACT Hydrogen production by catalytic gasification in supercritical water (SCW) is a promising way to utilise biomass resource. Supercritical water not only provides homogeneous and rapid reaction environment for the biomass gasification but also causes catalyst agglomeration problems. In order to prepare activity and stable catalyst for biomass gasification in supercritical water, supercritical water synthesis method was utilised and the preparation method was investigated. Ni, Co, Zn and Cu metal elements were loaded on TiO2 particles which was proved to be hythothermally steady in supercritical water. And nano-particles were successfully made. Based on gas chromatography/mass spectrometer (GC/MS), scanning electron microscopy, energy dispersive spectrometer (EDS) and X-ray diffraction analysis methods, it turned out that metal catalysts have a uniform spherical structure with diameter around 30 nm. Metal catalysts synthesised with supercritical hydrothermal method showed certain catalytic effects. Ni catalyst had the best performance in stability while Zn catalyst possessed highest hydrogen yield.
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