Teitl: Identification of C2-C5 products from CO2 hydrogenation over PdZn/TiO2-ZSM-5 hybrid catalysts - data

Dyfyniad
Ruiz Esquius J, Shaw G (2021). Identification of C2-C5 products from CO2 hydrogenation over PdZn/TiO2-ZSM-5 hybrid catalysts - data. Cardiff University. http://doi.org/10.17035/d.2021.0129194354


Hawliau Mynediad: Darperir Data dan drwydded Creative Commons Attribution (CC BY 4.0)
Dull Mynediad: I anfon cais i gael y data hwn, ebostiwch opendata@caerdydd.ac.uk

Crewyr y Set Ddata o Brifysgol Caerdydd

Manylion y Set Ddata
Cyhoeddwr: Cardiff University
Dyddiad (y flwyddyn) pryd y daeth y data ar gael i'r cyhoedd: 2021
Dyddiad dechrau creu'r data: 01.06.2019
Dyddiad gorffen creu'r data: 14.12.2020
Fformat y data: .xlsx, opj.
Meddalwedd ofynnol: CO2 hydrogenation data stores in a excel file.
Catalyst characterization data stored as an origin file

Amcangyfrif o gyfanswm maint storio'r set ddata: Llai nag 1 gigabeit
Nifer y ffeiliau yn y set ddata: 2
DOI: 10.17035/d.2021.0129194354

Disgrifiad

A PdZn/TiO2 methanol catalysts was physically mixed with different ZSM-5 zeolites with different acidity (Si/Al ratio of 23, 50 and 80). The phisical mixture of two different catalysts for tandem reactions are known as hybrid catalysts. PdZn/TiO2-ZSM-5 hybrid catalysts were employed for the CO2 hydrogenation to CH3OH, consecutive CH3OH dehydration to dimethyl ether (DEM) and further CH3OH/DME conversion to hydrocarbons (20 bar, CO2/H2/N2 = 1/3/1, 30 ml min-1, 240-360 °C).

PdZn/TiO2 catalyst prior and after reaction was characterised by XRD, XPS and XAS. Characterisation shows that the bulk PdZn phase is stable during reaction, however, some surface PdZn decomposition to Pd and ZnO might occur.

CH3OH produtivity over PdZn/TiO2 is limited by equilibrium above 270-300 °C, the combination with an acid catalyst (ZSM-5 zeolite) promotes CH3OH dehydration to DME, increasing the total CH3OH productivity. CH3OH and DME react over acid sites on ZSM-5 through the MTH and DMETH to produce olefins. Synthesise olefins however undergo further hydrogeation to the corresponding alkanes, likely over PdZn hydrogenation active sites. Thus, restricting chain growth for the production of hydrocarbons on the gasoline range.

Research results based upon these data are published at https://doi.org/10.1039/D0FD00135J



Allweddeiriau

Catalysis, Energy, fuel, Methanol synthesis, PALLADIUM ALLOY

Prosiectau Cysylltiedig

Diweddarwyd y tro diwethaf ar 2021-10-03 am 11:23