Issue 30, 2023

Biochar production from cellulose under reductant atmosphere: influence of the total pyrolysis time

Abstract

Today's rising energy costs, coupled with increasing energy demand, make it necessary to search for more efficient energy processes. In recent years, there have been increasing efforts to develop efficient catalysts based on waste-derived char, by a single step where the carbon precursor and the metallic active phase one undergo a single common thermal process under a reductant atmosphere at high temperature. The use of a reductant atmosphere drives the formation of carbonaceous materials with different characteristics than those obtained under the standard nitrogen-inert one. Our work evaluates the influence of the residence time and the heating rate on the physicochemical properties of the biochar obtained. Relatively long residence times and slow heating rates, improve the yield to the resulting biochar, without increasing production cost, making the subsequent char-based metallic catalyst synthesis more efficient. The heating rate was shown to be key in improving the properties of the char in a smoother and more controlled way, unlocking a new working pathway for the efficient design and production of char-based catalysts in a one-pot synthesis.

Graphical abstract: Biochar production from cellulose under reductant atmosphere: influence of the total pyrolysis time

Supplementary files

Article information

Article type
Paper
Submitted
09 May 2023
Accepted
08 Jun 2023
First published
12 Jul 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 21071-21079

Biochar production from cellulose under reductant atmosphere: influence of the total pyrolysis time

J. L. Santos, M. A. Centeno and J. A. Odriozola, RSC Adv., 2023, 13, 21071 DOI: 10.1039/D3RA03093H

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