Tuesday, March 15, 2016

A Facile and Efficient Modification of CNTs for Improved Fischer–Tropsch Performance on Iron Catalyst: Alkali Modification

A Facile and Efficient Modification of CNTs for Improved Fischer–Tropsch Performance on Iron Catalyst: Alkali Modification

Type
Journal Article
Author
Renjie Liu
Author
Yan Xu
URL
Publication
ChemCatChem
Date
January 1, 2016
Abstract
Researchers used an environmentally friendly method to pretreat carbon nanotubes (CNTs) by alkali modification, which decreases the wall thickness, increases the inner diameter, and improves the graphitization degree of CNTs compared to conventional acid treatment.
The iron catalyst supported on alkali modified CNTs exhibited remarkable Fischer–Tropsch synthesis (FTS) activity and CO conversion compared to those supported on either the acid treated or pristine CNTs. In addition, the diesel (C10-20) selectivity on Fe/CNTs-Na is up to 60 %, much higher than that calculated from the Anderson–Schulz–Flory distribution. Similar results are also found by using activated carbon (AC) and N-doped multiwall carbon nanotubes (NCNTs) as supports for FTS, proving the universal applicability of alkali modification on carbon material.

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