SSZ-13 catalyst for the Methanol-to-Olefins process: effect of reaction temperature, weight hourly space velocity and methanol partial pressure

Maljkovic, Sara (2022) SSZ-13 catalyst for the Methanol-to-Olefins process: effect of reaction temperature, weight hourly space velocity and methanol partial pressure. Bachelor's Thesis, Chemical Engineering.

Preview	Text Bachelor Project Report_S.Maljkovic.pdf Download (3MB) | Preview
	Text toestemming.pdf Restricted to Registered users only Download (122kB)

Abstract

The Methanol-to-Olefins process allows for an alternative way of lower olefin (C2 to C4) production over a zeolite catalyst. The aim of this research was to study the influence of the reaction conditions (reaction temperature, weight hourly space velocity and methanol partial pressure) on the catalytic performance and products of the process, using a fixedbed reactor. The SSZ-13 zeolite was employed as the catalyst. It was analysed by X-Ray Diffraction (XRD) and Ammonia-Programmed Temperature Desorption (NH3-TPD) to confirm its chabazite topology and its acidity. The varying of reaction conditions gave rise to different methanol conversions and product compositions. When decreasing the WHSV from 1.03 h-1 to 0.77 h-1, the catalytic lifetime increased from 3 to 4 hours. When increasing the methanol partial pressure by 0.1 bar, the lifetime of the catalyst doubled from 2.5 hour to 5 hours. Catalytic lifetime was longest for intermediate temperatures (390◦C and 430◦C), as at high and low temperatures, catalyst deactivation was the quickest. Aside from the lower olefins, pentene and paraffins (C1 to C4) were also produced. The selectivity towards ethylene and propylene increased throughout the reaction, while the selectivity towards butene and pentene decreased thought out the reaction. The spent catalyst samples were analysed with XRD.

Item Type:	Thesis (Bachelor's Thesis)
Supervisor name:	Xie, J.
Degree programme:	Chemical Engineering
Thesis type:	Bachelor's Thesis
Language:	English
Date Deposited:	05 Jul 2022 10:13
Last Modified:	05 Jul 2022 10:13
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/27613

Actions (login required)

View Item