Dehydration of Alcohols to Olefins Catalyzed by ZrAPSO-34 Molecular Sieve

Mazin Jasim  Mohammed; Najwa Saber Majeed; Mohammed J. Al-Ani

doi:10.31699/IJCPE.2024.2.10

Article Details

Dehydration of Alcohols to Olefins Catalyzed by ZrAPSO-34 Molecular Sieve

Authors:

Mazin Jasim Mohammed | Najwa Saber Majeed | Mohammed J. Al-Ani

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Chemical and Petroleum Engineering Vol.25 Issue 2, pp.109-118

Document Type:

Article

Publication Date:

6/2024

Document Language:

English

Document ID (Org No.):

2001368413

pISSN:

2618-0707

DOI:

10.31699/IJCPE.2024.2.10

Keywords:

Abstract:

 The lower olefins (Ethylene, propylene, and butylene) are considered the key to the polymeric and petrochemical industries. Dehydration of alcohols to produce light olefins (Methanol-to-olefins reaction) over SAPO-34 molecular sieve has attractedintoigh attention. Modified SAPO-34 zeolite catalyst with Zr metal was successfully prepared under microwave irradiation using morpholine as a structure direct agent. The microwave energy power used was 800 w and the crystallization time was 200 min. The catalyst sample was characterized by XRD, SEM, EDX, BET, FTIR, and TGA analysis. XRD analysis exhibited a typical chabazite structure with high crystallinity. The analysis showed macrocrystalline particles with moderate distribution of silica in the framework structure and a low surface area of 77 m2/g. The vibration peaks of the prepared catalyst showed agreement with the SAPO-34 CHA structure. Catalyst performance towards methanol-to-olefins conversion was performed in a trickle bed reactor with temperatures of 350, 400, 450, and 500 oC at a weight hourly space velocity of 7.7 h-1. The results also reveal at a temperature of 400 oC , that the best olefins selectivity was obtained, reaching 70%, with a longer lifetime of 500 min. methanol conversion was almost 100% at all reaction temperatures. In addition, the effect of methanol concentration was investigated and the results showed that increasing of water content plays a role in increasing catalyst lifetime and preventing coke depositions in pores.

Article Details

Dehydration of Alcohols to Olefins Catalyzed by ZrAPSO-34 Molecular Sieve

Authors:

Mazin Jasim Mohammed | Najwa Saber Majeed | Mohammed J. Al-Ani

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Chemical and Petroleum Engineering Vol.25 Issue 2, pp.109-118

Document Type:

Article

Publication Date:

6/2024

Document Language:

English

Document ID (Org No.):

2001368413

pISSN:

2618-0707

DOI:

10.31699/IJCPE.2024.2.10

SAPO-34 zeolite catalyst

Zr metal incorporation

microwave irradiation

MTO, selectivity

Issues

Article Details

Dehydration of Alcohols to Olefins Catalyzed by ZrAPSO-34 Molecular Sieve

Authors: Mazin Jasim Mohammed | Najwa Saber Majeed | Mohammed J. Al-Ani

Publisher: University of Baghdad

Journal: Iraqi Journal of Chemical and Petroleum Engineering Vol.25 Issue 2, pp.109-118

Document Type: Article

Publication Date: 6/2024

Document Language: English

Document ID (Org No.): 2001368413

pISSN: 2618-0707

DOI: 10.31699/IJCPE.2024.2.10

SAPO-34 zeolite catalyst

Zr metal incorporation

microwave irradiation

MTO, selectivity

Issues

Authors:

Mazin Jasim Mohammed | Najwa Saber Majeed | Mohammed J. Al-Ani

Publisher:

University of Baghdad

Journal:

Iraqi Journal of Chemical and Petroleum Engineering Vol.25 Issue 2, pp.109-118

Document Type:

Article

Publication Date:

6/2024

Document Language:

English

Document ID (Org No.):

2001368413

pISSN:

2618-0707

DOI:

10.31699/IJCPE.2024.2.10