Preparation of Alumina Pillared Montmorillonite Clays Employing Ultrasonics and Their Catalytic Properties
An accelerated diffusion of alumina precursor species in-between the gallery region of montmorilloniteclays by the use of ultrasonic technique is described. This method offers a faster, efficient and attractiveroute for the synthesis of alumina-pillared clay catalysts. Out of the several preparative...
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| Published in: | Eurasian chemico-technological journal Vol. 2; no. 1; pp. 53 - 58 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
al-Farabi Kazakh National University
15-04-2016
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| Online Access: | Get full text |
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| Summary: | An accelerated diffusion of alumina precursor species in-between the gallery region of montmorilloniteclays by the use of ultrasonic technique is described. This method offers a faster, efficient and attractiveroute for the synthesis of alumina-pillared clay catalysts. Out of the several preparative parameters studied,the role of pre-exchanged cations influenced the optimum duration of ultrasonic agitation and treatment forthe pillaring process. By comparing ultrasonic route and conventional preparation procedure, it is revealedthat uniform spacing of alumina pillars in the clay means homogeneously distributed acid centers. Theinfluence of calcination temperature on the acidity and hence the catalytic activity is described. The choiceof three different montmorillonite clays with different cation exchange capacities enables one to tune thepore dimensions of the pillared clays. The catalytic applications include studies on cumene cracking, dehy-dration of propan-2-ol and alkylation of benzene with linear olefins. |
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| ISSN: | 1562-3920 2522-4867 |
| DOI: | 10.18321/ectj357 |