Cardiff University
Browse

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

Download (4.13 MB)

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


Funding

Flexible routes to liquid fuels from co2 by advanced catalysis and engineering (2016-03-31 - 2020-09-30); Hutchings, Graham. Funder: Engineering and Physical Sciences Research Council:IRIS 130635/54

History

Specialist software required to view data files

origin file

Language(s) in dataset

  • English-Great Britain (EN-GB)

Data-collection start date

2019-02-01

Data-collection end date

2021-02-22

Usage metrics

    School of Chemistry

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC