Details

Autor(en) / Beteiligte

• Zuo, Yanfen
• Zhang, Yunpeng
• Ren, Qiang
• Xu, Youhao
• Luo, Yibin
• Shu, Xingtian

Titel

A strategy combining the catalytic cracking of C6-C8 olefins and methanol to olefins (MTO) reaction through SAPO-34 pre-coking

Ist Teil von

• Catalysis communications, 2022-08, Vol.168, p.106461, Article 106461

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2022

Link zum Volltext

Quelle

EZB-FREE-00999 freely available EZB journals

Beschreibungen/Notizen

• The coupling conversion of C6-C8 olefins and methanol over SAPO-34 is proposed for enhancing carbon resource utilization and light olefins production. With the aid of thermogravimetric analysis (TGA), dissolution-extraction experiment and molecular dynamics simulations, the relationship between reactive “coke” and reaction pathway of methanol-to-olefin (MTO) are studied. Owing to its remarkable product shape selectivity, octene is explored to be an effective coking source for promoting ethene production. Evolution of confined species on pre-coked SAPO-34 illustrates the effect of polycyclic aromatics on product shape selectivity in MTO reaction. [Display omitted] •Pre-coking strategies based on C6 – C8 olefins cracking are summarized.•The C2=/C3= ratio in production enhances by 40%.•Impact of HCP species on diffusional hindrances, product selectivity, etc. are elucidated.•The combined transition-state and product shape selectivity in MTO process is established.