Activated carbons from Spanish coals. 1. Two-stage carbon dioxide activation

Autor:	M.J. Muñoz-Guillena, C. Salinas-Martinez de Lecea, J. M. Martín-Martínez, María José Illán-Gómez, A. Linares-Solano
Rok vydání:	1992
Předmět:	Chemistry business.industry General Chemical Engineering Anthracite Energy Engineering and Power Technology Mineralogy Combustion chemistry.chemical_compound Fuel Technology Chemical engineering Carbon dioxide medicine Coal Char Porosity business Pyrolysis Activated carbon medicine.drug
Zdroj:	Energy & Fuels. 6:9-15
ISSN:	1520-5029 0887-0624
DOI:	10.1021/ef00031a002
Popis:	A two-stage (pyrolysis and CO 2 activation) treatment of Spanish coals has been studied in relation to the preparation of activated carbons. The paper analyzes three different aspects : (i) coal precursor effect (from anthracite to high-volatile bituminous), (ii) mineral matter content, and (iii) pore volume and surface area development upon activtion. The coal rank influences the pyrolysis behavior, the characteristics of the char (e.g., porosity), the rate of activation, and the characteristics of the resulting activated carbon. The pyrolysis and combustion behavior of the chars, deduced from TG-DTA curves, have been related to the subsequent porosity development upon activation. Chars showing a uniform combustion are better precursors than those presenting a bifurcated DTA peak and two TG steps
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::eccf406031ec6b7c6f76575a75f47648 https://doi.org/10.1021/ef00031a002 Zobrazit plný text záznamu