Publisher: Springer Science and Business Media LLC

Issue:

License: [{"URL"=>"https://creativecommons.org/licenses/by/4.0", "start"=>{"date-parts"=>[[2021, 5, 16]], "date-time"=>"2021-05-16T00:00:00Z", "timestamp"=>1621123200000}, "delay-in-days"=>0, "content-version"=>"tdm"}, {"URL"=>"https://creativecommons.org/licenses/by/4.0", "start"=>{"date-parts"=>[[2021, 5, 16]], "date-time"=>"2021-05-16T00:00:00Z", "timestamp"=>1621123200000}, "delay-in-days"=>0, "content-version"=>"vor"}]

Publication date(s): 2021/05/16 (online)

Pages:

Volume: Issue:

Journal: Topics in Catalysis

Link: [{"URL"=>"https://link.springer.com/content/pdf/10.1007/s11244-021-01447-8.pdf", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://link.springer.com/article/10.1007/s11244-021-01447-8/fulltext.html", "content-type"=>"text/html", "content-version"=>"vor", "intended-application"=>"text-mining"}, {"URL"=>"https://link.springer.com/content/pdf/10.1007/s11244-021-01447-8.pdf", "content-type"=>"application/pdf", "content-version"=>"vor", "intended-application"=>"similarity-checking"}]

URL: http://dx.doi.org/10.1007/s11244-021-01447-8

AbstractCu/ZnO methanol catalysts were deposited over several ZSM-5 acid zeolites 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 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 ℃, 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.