Journal
APPLIED CATALYSIS A-GENERAL
Volume 638, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcata.2022.118624
Keywords
Oleic acid; Long-chain olefins; Vanadium oxide; Magnesium oxide; Oxidative dehydrogenation; KIT-6
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Funding
- Program Management Unit for Human Resources & Institutional Development, Research and Innovation [B01F630002]
- Thailand Science Research and Innovation [CU_FRB640001_01_23_2]
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This study investigated the effect of MgO incorporation into VKIT-6 catalysts and VxOy contents impregnated into MgO-KIT-6 catalysts on the catalytic activity. It was found that the Mg/V molar ratios and VxOy contents strongly affected the catalytic performance and selectivity.
This study investigated the effect of magnesium oxide (MgO) incorporation into vanadium-KIT-6 (VKIT-6) catalysts and vanadium oxide (VxOy) contents impregnated into MgO-KIT-6 catalysts on the catalytic activity in the oxidative dehydrogenation of oleic acid to generate long-chain bio-olefins (>= C10). The nMgO-VKIT-6 catalysts containing different Mg/V molar ratios (n = 0.00-1.50) were prepared by the hydrothermal process, while xV/ MgO-KIT-6 catalysts were synthesized via wet-impregnation method with different vanadium contents (x = 0-9 wt%). The Mg/V molar ratios in the nMgO-VKIT-6 catalysts and VxOy contents in the xV/MgO-KIT-6 catalysts strongly affected the catalytic performance and selectivity to the desired products. Both 0.50MgOVKIT-6 and 1 V/MgO-KIT-6 catalysts showed the best catalytic activity for the desired products with selectivity to olefins (alkenes + dienes) and aromatics of 52% and 20%, respectively. The high selective production to the desired products was ascribed to the highly dispersed and isolated VxOy species on the catalysts.
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