Ru-MOF enwrapped by montmorillonite for catalyzing benzene hydrogenation

被引:30
|
作者
Chen, Dechao [1 ]
Huang, Mei [1 ]
He, Shuai [1 ]
He, Shulian [1 ]
Ding, Liping [1 ]
Wang, Qi [1 ]
Yu, Shaoming [1 ]
Miao, Shiding [1 ]
机构
[1] Hefei Univ Technol, Anhui Key Lab Controllable Chem React & Mat Chem, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
Ruthenium metal-organic frameworks; Montmorillonite; Hydrogenation catalysis; Coordinatively unsaturated sites; METAL-ORGANIC FRAMEWORKS; HETEROGENEOUS CATALYST; CARBON NANOTUBES; NANOPARTICLES; IMMOBILIZATION; OXIDATION;
D O I
10.1016/j.clay.2015.07.011
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, the metal-organic frameworks of ruthenium [Ru-2(II,III)(BTC)(2)XXY1.5 - x] (BTC = 1,3,5-benzenetricarboxylate, X, Y = Cl- or OH-, termed as Ru-MOFs) that are grown on montmorillonite (Mt) in a solvothermal reaction, and a type of composite materials (Ru-MOF_Mt) with open channels have been fabricated. Due to the high pore volume, the Ru-MOF particles are found to greatly enlarge the surface area of the hybrid material. To activate the metal centers in the Ru-MOF, the hybrids are annealed in a flow of H-2 at mid-level temperatures (similar to 300 degrees C). With this H-2-annealing treatment the frameworks are found to be partly decomposed, and the coordinatively unsaturated sites (CUS) are produced. The annealed Ru-MOF Mt is highly efficient in catalyzing reactions of benzene hydrogenation. The turn-over frequency (TOF) of benzene to hexane reaches 3478 h(-1). This catalyst is able to be reused at least five times without any de-activation demonstrating that the CUS are readily protected by the Mt layers. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:109 / 115
页数:7
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