Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation
Mesoporous ZSM5 (mZSM5) was prepared by the dual templating method for n-heptane cracking and CO methanation. The properties of mZSM5 were tailored by varying the aging time in the 0.5–3-day range. The physical properties of the catalysts were characterized with XRD, FESEM, nitrogen physisorption an...
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my.utm.585322021-09-05T07:41:44Z http://eprints.utm.my/id/eprint/58532/ Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation Teh, L. P. Triwahyono, S. A. Jalil, A. Mukti, R. R. A. Aziz, M. A. Shishido, T. QD Chemistry Mesoporous ZSM5 (mZSM5) was prepared by the dual templating method for n-heptane cracking and CO methanation. The properties of mZSM5 were tailored by varying the aging time in the 0.5–3-day range. The physical properties of the catalysts were characterized with XRD, FESEM, nitrogen physisorption and IR. XRD and FESEM analyses indicated that mZSM5s possessed a high crystalline structure with coffin-type morphology. Nitrogen physisorption analysis revealed the presence of both micropores and mesopores in high surface area mZSM5s with inter- and intra-particle porosity. The pyridine and pyrrole adsorbed IR spectroscopy results demonstrated that mZSM5s have both intrinsic acidic and basic sites, which are suitable for acid and/or base catalyzed reactions. The bare mZSM5-0.5D exhibited the highest rate of conversion of n-heptane (0.0230 μmol/m2 s) and CO (0.0226 μmol/m2 s) at 573 K and 723 K, respectively. The mZSM5s performed with good stability and no deactivation up to 30 h for n-heptane cracking and CO methanation. Co-existence of micro-mesopores and intrinsic acidic–basic sites is vital for acid-catalyzed and base-catalyzed reactions. Elsevier B.V. 2015-06-15 Article PeerReviewed Teh, L. P. and Triwahyono, S. and A. Jalil, A. and Mukti, R. R. and A. Aziz, M. A. and Shishido, T. (2015) Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation. Chemical Engineering Journal, 270 . pp. 196-204. ISSN 1385-8947 http://dx.doi.org/10.1016/j.cej.2015.01.084 DOI:10.1016/j.cej.2015.01.084 |
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QD Chemistry Teh, L. P. Triwahyono, S. A. Jalil, A. Mukti, R. R. A. Aziz, M. A. Shishido, T. Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation |
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Mesoporous ZSM5 (mZSM5) was prepared by the dual templating method for n-heptane cracking and CO methanation. The properties of mZSM5 were tailored by varying the aging time in the 0.5–3-day range. The physical properties of the catalysts were characterized with XRD, FESEM, nitrogen physisorption and IR. XRD and FESEM analyses indicated that mZSM5s possessed a high crystalline structure with coffin-type morphology. Nitrogen physisorption analysis revealed the presence of both micropores and mesopores in high surface area mZSM5s with inter- and intra-particle porosity. The pyridine and pyrrole adsorbed IR spectroscopy results demonstrated that mZSM5s have both intrinsic acidic and basic sites, which are suitable for acid and/or base catalyzed reactions. The bare mZSM5-0.5D exhibited the highest rate of conversion of n-heptane (0.0230 μmol/m2 s) and CO (0.0226 μmol/m2 s) at 573 K and 723 K, respectively. The mZSM5s performed with good stability and no deactivation up to 30 h for n-heptane cracking and CO methanation. Co-existence of micro-mesopores and intrinsic acidic–basic sites is vital for acid-catalyzed and base-catalyzed reactions. |
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Article |
author |
Teh, L. P. Triwahyono, S. A. Jalil, A. Mukti, R. R. A. Aziz, M. A. Shishido, T. |
author_facet |
Teh, L. P. Triwahyono, S. A. Jalil, A. Mukti, R. R. A. Aziz, M. A. Shishido, T. |
author_sort |
Teh, L. P. |
title |
Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation |
title_short |
Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation |
title_full |
Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation |
title_fullStr |
Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation |
title_full_unstemmed |
Mesoporous ZSM5 having both intrinsic acidic and basic sites for cracking and methanation |
title_sort |
mesoporous zsm5 having both intrinsic acidic and basic sites for cracking and methanation |
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Elsevier B.V. |
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2015 |
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http://eprints.utm.my/id/eprint/58532/ http://dx.doi.org/10.1016/j.cej.2015.01.084 |
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13.18916 |