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Issue 22, 1994
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IR spectroscopic study of CD3CN adsorbed on ALPO-18 molecular sieve and the solid acid catalysts SAPO-18 and MeAPO-18

Abstract

CD3CN has been used as an IR spectroscopic probe to elucidate the nature of the Brønsted and Lewis acid sites in ALPO-18, SAPO-18 and MeAPO-18 (Me = Co, Mg and Zn) microporous materials. Interaction of CD3CN with (Si)–OH–(Al) bridging hydroxy groups in SAPO-18 gives rise to C[triple bond, length as m-dash]N absorption bands at 2291 and 2284 cm–1, whereas CD3CN bound to CoII(in CoAPO-18) and MgII(in MgAPO-18) centres exhibits bands at 2310–2305 and 2306–2302 cm–1, respectively. There are two types of ZnII centres in ZnAPO-18, one of which is associated with a C[triple bond, length as m-dash]N band at 2316 cm–1 and the other at 2306–2303 cm–1. Interactions between CD3CN and strong/weak AlIII Lewis sites and (P)—OH groups were also observed.

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Article type: Paper
DOI: 10.1039/FT9949003455
J. Chem. Soc., Faraday Trans., 1994,90, 3455-3459

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    IR spectroscopic study of CD3CN adsorbed on ALPO-18 molecular sieve and the solid acid catalysts SAPO-18 and MeAPO-18

    J. Chen, J. M. Thomas and G. Sankar, J. Chem. Soc., Faraday Trans., 1994, 90, 3455
    DOI: 10.1039/FT9949003455

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