Title: Combination of Cu/ZnO methanol synthesis catalysts and ZSM-5 zeolites to produce oxygenates from CO2 and H2 - data


Citation
Tariq A, Ruiz Esquius J, Davies TS (2021). Combination of Cu/ZnO methanol synthesis catalysts and ZSM-5 zeolites to produce oxygenates from CO2 and H2 - data. Cardiff University. http://doi.org/10.17035/d.2021.0129557921



Access Rights: Data is provided under a Creative Commons Attribution (CC BY 4.0) licence

Access Method: Click to email a request for this data to opendata@cardiff.ac.uk


Cardiff University Dataset Creators


Dataset Details

Publisher: Cardiff University

Date (year) of data becoming publicly available: 2021

Coverage start date: 01/02/2019

Coverage end date: 22/02/2021

Data format: opj

Software Required: origin file

Estimated total storage size of dataset: Less than 1 gigabyte

Number of Files In Dataset: 1

DOI : 10.17035/d.2021.0129557921

DOI URL: http://doi.org/10.17035/d.2021.0129557921


Description

Cu/ZnO methanol catalysts were deposited over several ZSM-5 acid zeolites (Si/Al = 30, 50 and 80) to directly synthesise oxygenates (methanol and dimethyl ether) from a CO2/H2 feed. Catalysts were prepared by two different preparation methodologies: chemical vapour impregnation (CZZ-CVI) and oxalate gel precipitation (CZZ-OG). Chemical vapour impregnation led to Cu/ZnO being unevenly deposited on the zeolite surface, whilst oxalate gel precipitation led to the formation of Cu/ZnO agglomerates.

For both sets of catalysts a higher concentration of mild and strong acid sites were produced, compared to the parent ZSM-5 zeolites, and CZZ-CVI had a higher concentration of acid sites compared to CZZ-OG. Nevertheless, CZZ-OG shows considerably higher oxygenate productivity, 1322 mmol Kgcat-1 h-1, compared to 192 mmol Kgcat-1 h-1 over CZZ-CVI (ZSM-5(50), 250 °C, 20 bar, CO2/H2=1/3, 30 ml min-1), which could be assigned to a combination of smaller particle size and enhanced methanol mass transfer within the zeolites.

Increasing the concentration of Al on the zeolite led to a greater productivity of by-products, formed through the methanol/DME-to-hydrocarbons process (MTH/DMTH).

Catalysts were characterised by XRD, TEM, N2 absorption and NH3-TPD.

Research results based upon these data are published at http://doi.org/10.1007/s11244-021-01447-8


Keywords

Carbon Dioxide Activation, copper, Methanol synthesis

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Last updated on 2021-29-09 at 11:16