Maqola

Selective Formation of Para-Xylene by Methanol Aromatization over Phosphorous Modified ZSM-5 Zeolites

Xianjun NiuCollege of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaKai WangCollege of Chemical and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, ChinaYang BaiCollege of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaYi-En DuCollege of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaYong‐Qiang ChenCollege of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, ChinaMei DongState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, ChinaWeibin FanState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, China

2020en

ABI

Annotatsiya

Phosphorous modified ZSM-5 zeolites were synthesized by incipient wetness impregnation. Their performances for the methanol to aromatics conversion (MTA) were subsequently evaluated and the relationship between the catalyst structure and performance was focused on. The obtained results indicated that the introduction of phosphorous resulted in the modification of the catalyst structure characteristics and acidic properties, i.e., the reduction in the external surface area and micropore volume, the narrowing of the pore size, and the decrease in the quantity and strength of acid sites. As a result, the P/HZSM-5 catalyst exhibited the enhanced selectivity for the para-xylene (PX) in xylene isomers and xylene in aromatics, and their increase degrees were intensified with the increasing P content. The selectivity of PX in X increased from 23.8% to nearly 90% when P content was 5 wt.%. Meanwhile, the selectivity of xylene in aromatics was enhanced from 41.3% to 60.2%.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.3390/catal10050484

Iqtiboslar va manbalar

3 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar