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Citation: XING Feng-Lan. Characterization and Catalytic Performance of Calcium Metaborate Catalyst Supported on Al-MCM-41 in the Oxyethylation of n-Octyl Alcohol[J]. Chinese Journal of Applied Chemistry, ;2006, 23(11): 1291-1294. shu

Characterization and Catalytic Performance of Calcium Metaborate Catalyst Supported on Al-MCM-41 in the Oxyethylation of n-Octyl Alcohol

XING Feng-Lan ^,

1.
College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006

Corresponding author: XING Feng-Lan,
Received Date: 20 December 2005
Available Online: 9 June 2006

Mesoporous molecular sieves containing aluminum ions(Al-MCM-41) with Si/Al ratio of 30 were used to support 20% calcium metaborate (Ca(BO₂)₂) by microwave irradiation method.The samples,Ca(BO₂)₂/Al-MCM-41 were characterized by powder X-ray diffraction(XRD),nitrogen adsorption measurement(BET),Fourier transform infra red spectroscopy(FT-IR).The XRD patterns show that the Ca(BO₂)₂ was dispersed uniformly on Al-MCM-41 and the material,Ca(BO₂)₂/Al-MCM-41,had the indigenous Al-MCM-41 structure and ordered pore distribution.Ca(BO₂)₂/Al-MCM-41 samples were used as catalysts in the ethyloxylation of n-octyl alcohol.The results show that Ca(BO₂)₂/Al-MCM-41 has higher catalytic activity than Al-MCM-41 and Ca(BO₂)₂.The reaction was carried out at 140℃ in the presence of 5% catalyst with respect to the octanol.The homologue distribution of the ethoxylates was determined by means of GC and MS techniques,which showed the homologue distribution of octanolpolyoxyethylene ethers was narrowed for Ca(BO₂)₂/Al-MCM-41 catalyzed ethoxylation,and the selectivity coefficient(C_s) was 17.9.
- Al-MCM-41,
- calcium metaborate,
- catalytic performance,
- ethoxylation
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