Selective ion-exchange in MAPO-36 and its application in toluene disproportionation
作者： S Vishnu Priya , J Herbert Mabel , S Gopalakrishnan , M Palanichamy , V Murugesan
DOI: 10.1007/S10934-008-9214-Y
关键词:
摘要: MAPO-36 was synthesized hydrothermally by isomorphic substitution of Mg2+ in the framework AlPO-36 and ion-exchanged with Fe3+, Zn2+, La3+ Ce3+ wet method. The materials were characterized XRD, TGA, TPD (ammonia) SEM-EDX. XRD revealed absence structural degradation after ion-exchange. showed selective ion-exchange strong acid sites MAPO-36. weight loss around 550 °C TGA for Fe, La CeMAPO-36 suggested conversion M(OH) 2 + to MO+. Toluene disproportionation carried over all catalysts which diphenyl methane derivative be principle intermediate formation p-xylene other products. time on stream study exclusive 6 h.
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