Citation: Nong Yue HE, Qi Hong SHI, Fei GAO, Yi Bing SONG, Yang YU, Hui Lin WAN. Adsorption Behavior for CO on Modified MCM-41 with Zn and CuCl[J]. Chinese Chemical Letters, ;2002, 13(8): 783-786. shu

Adsorption Behavior for CO on Modified MCM-41 with Zn and CuCl

Nong Yue HE ^1,2, ,
Qi Hong SHI ³ ,
Fei GAO ³ ,
Yi Bing SONG ³ ,
Yang YU ³ ,
Hui Lin WAN ⁴

1.
Key Lab of New Materials and Technology of China National Packaging Corporation, Zhuzhou Engineering College, Zhuzhou 412008;
2.
Key Laboratory for Molecular and Biomolecular Electronics of Ministry of Education, Southeast University, Nanjing 210096;
3.
Departmennt of Chemistry, Shantou University, Shantou 515063;
4.
The State key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005

Received Date: 28 November 2001

The Zn-Cu(Ⅰ)/HMCM-41 catalysts were successfully prepared in laboratory scale by solid-state ion exchange with CuCl salt, together with introduction of Zn to improve the dispersion degree of the active component Cu(Ⅰ) on the surface. With increase of the amounts of Zn and CuCl from 0% to 9.0% and 25.0% respectively, CO adsorption the amounts of increased from 10.6 μmol/g to 183.0 μmol/g correspondingly. The in situ FT-IR spectra for CO adsorption demonstrated that there existed two dynamic equilibriums between surface carbonyl complexes:Cu(CO)₃⇔Cu(CO)₂⁺+CO and Cu(CO)₂⁺⇔Cu(CO)⁺+CO. The equilibriums can be shifted reversibly by changing the temperature and pressure. Due to the modified MCM-41 mesoporous materials possess both of the acidic and metallic carbonyl centers, this kind of material can be developed into mesoporous bifunctional catalysts for carbonylation reactions, in which larger molecules are involved.
- MCM-41,
- carbon monoxide,
- adsorption,
- carbonylation,
- cuprous
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