Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 304, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2021.120984
Keywords
Alcohol coupling reactions; Esterification; Mixed metal oxides; Schultz-Flory distribution; Catalyst stability
Funding
- ExxonMobil Research and Engineering Company, USA
Ask authors/readers for more resources
A series of calcined MgAl mixed metal oxide catalysts with low Cu loadings were tested for ethanol oligomerization to distillate-range molecules. The low Cu loading catalysts showed high selectivity to linear chain alcohols and esters, with diesel fuel precursor selectivities over 75%.
A series of calcined MgAl mixed metal oxide catalysts with low Cu loadings (0.1-1.5 wt%) were tested for ethanol oligomerization to distillate-range molecules. The low Cu loading catalysts (0.1-0.6 wt%) had high selectivity to linear chain C4+ alcohols (49-63% selectivity) and C6+ esters (45-66% of total esters). More specifically, the diesel fuel precursor selectivities were over 75% for low Cu loading catalysts (0.1-0.6 wt%), with a decrease to 49% for a higher Cu loading catalyst (> 1.2 wt% Cu) due to increased ethyl acetate and acetone formation. Alcohol and ester product selectivities follow a Schultz-Flory distribution. Alcohol selectivity was found to vary inversely with BET surface areas of the catalysts, whereas ester selectivity was found to increase with higher base site counts. However, Cu wt% loading was found to have a stronger impact in overall catalyst activity. The catalysts deactivated proportionally to the number of turnovers mainly due to coking, but could be regenerated by calcination.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available