Spectroscopic Characterization of the Active Site of NC208 Modified Copper-based Catalyst for Methanol Synthesis

Abstract

Abstract: Spectroscopic characterization of the active base of an industrial catalysts and NC208 modlfied copper-based catalysts for methanol synthesis has been carried out by means of XRDand FTIRrnethods.The experimental results showed that active site on functioning copper-based catalysts for methanol synthesis is probably Cu₂⁰-Cu⁺-O-Zn²⁺/Al₂O₃-MO_x and that the surface concentration of Cu⁺-site on functioning NC208, prepared by adding small amount of the metal oxide MO_x.to industrial catalyst C207, was higher than that of C207 catalyst, and that the surface of functioning NC208 catalyst had higher Cu⁺/Cu⁰ ratio and valence stability than that of C207 These pecullarities have close a relation with more persistent activity and higher thermal stability than modified NC208 catalyst.

Key words: Methanol synthesis, Copper-based catalysts, XRD, FTIR

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YANG Yi-Quan, LIN Zhong-Yu, CHE Chang-Zhen, YUANG You-Zhu, LIN Ren-Cun, DONG Yuan-Qun. Spectroscopic Characterization of the Active Site of NC208 Modified Copper-based Catalyst for Methanol Synthesis[J]. Chem. J. Chinese Universities, 1997, 18(1): 103.

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Spectroscopic Characterization of the Active Site of NC208 Modified Copper-based Catalyst for Methanol Synthesis

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