Enhancing Bio-Kerosene and Bio-Gas Oil Production from Bio-ethanol Dehydration Using The Hierarchical Mesoporous MSU-S_ZSM-5

• Main Authors: W. Choopun, S. Jitkarnka
• Format: Article
• Language: English
• Published: AIDIC Servizi S.r.l. 2015-09-01
• Series: Chemical Engineering Transactions
• Online Access: https://www.cetjournal.it/index.php/cet/article/view/4620

HZSM-5 zeolite has been noticed for its potential to convert bio-ethanol to monoaromatics hydrocarbons such as C6-C8s due to its suitable pore size and shape selectivity. In case of producing heavier hydrocarbons, a catalyst with larger pore sizes is necessary. In this work, the hierarchical mesoporous MSU-S embeded with ZSM-5 seed (MSU-SZSM5) was employed, aiming to produce heavier hydrocarbon compounds from bio- ethanol dehydration. MSU-SZSM5 was synthesized using TPAOH as a structure directing agent and CTAB as a surfactant. The characterization of catalysts was performed by using XRD with both small- and wide-anglemodes, SAA, and XRF. Bio-ethanol dehydration was conducted in a U-tube fixed bed reactor at 450 °C for 8 h at 0.5-1h LHSV of bio-ethanol. Then, the gaseous products were analyzed by using GC-TCD, and ethanol conversion was examined by using GC-FID. The oil products were analyzed by using SIMDIST GC forpetroleum fractions and GCxGC-TOF/MS for oil compositions. As a result, the hierarchical mesoporous MSU- SZSM5, found to have hexagonal structure, can produce more bio-kerosene and gas oil than conventional HZSM-5. For the oil compositions, C9 and C10+ aromatics hydrocarbons were the majority.