In:
Sustainable Energy & Fuels, Royal Society of Chemistry (RSC), Vol. 8, No. 14 ( 2024), p. 3036-3047
Abstract:
Ethanol can be converted into diesel fuel ethers using a three-step catalytic approach that involves ethanol oligomerization to larger alcohols, hydrogenolysis of the esters followed by dehydration of the C 4 to C 8 alcohols into ethers. In this paper we report results for the dehydration of a mixture of C 4 –C 8 alcohols using a zeolite Y catalyst in a continuous flow reactor. Mono-molecular dehydration of the alcohols produces olefins while bi-molecular dehydration of the alcohol produces ethers. Increasing the pressure increases the ether selectivity while decreasing the pressure produces more olefins. Linear alcohol feeds produce more C 8+ ethers, while branched and secondary alcohols lead to more olefins. Olefin and coke selectivities increase with increasing carbon chain length of alcohols. Secondary alcohols lead to higher coke selectivities. Ethanol/butanol oligomerization experiments showed that the incoming dehydration feedstock can be grown to larger C 6+ alcohol fractions, leading to higher yields of C 10+ diesel-range ethers.
Type of Medium:
Online Resource
ISSN:
2398-4902
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2024
detail.hit.zdb_id:
2882651-6
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