The Effect of Metal Introduced Over ZSM-5 Zeolite for C9 Heavy Aromatics Hydrodealkylation |
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| Authors: | T. Jin D.-H. Xia Y.-Z. Xiang Y.-L. Zhou |
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| Affiliation: | State Key Laboratory of Heavy Oil , College of Chemistry and Chemical Engineering, China University of Petroleum , Qingdao, China |
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| Abstract: | Abstract Five different (Bi, Ni, Mo, Pt, H)/ZSM-5 catalysts were tested for hydrodealkylation (HDA), isomerisation, dehydrogenated, cyclistion, and poly-alkyl-aromatics activities. Experiments were performed in a fixed-bed microreactor between 300°C and 420°C, at a total pressure of 0.8 MPa and a liquid hourly space velocity of 1.0 h?1. Pt (Mo)/ZSM-5 catalysts enhanced activity in terms of better balance between metal nanoparticles formed and acid sites. Pt-loading catalysts were the best overall catalysts, producing high C9 alkyl-aromatics (isopropylbenzene) conversion (95.9%), high HDA selectivity (92.2%), and relatively low reaction temperature. Mo-loading catalysts, despite producing the high conversion, required the higher reaction temperatures. |
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| Keywords: | C9 heavy aromatics catalysts hydrodealkylation ZSM-5 |
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