Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Journal of Porous Media
Fator do impacto: 1.49 FI de cinco anos: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
Volume 22, 2019 Volume 21, 2018 Volume 20, 2017 Volume 19, 2016 Volume 18, 2015 Volume 17, 2014 Volume 16, 2013 Volume 15, 2012 Volume 14, 2011 Volume 13, 2010 Volume 12, 2009 Volume 11, 2008 Volume 10, 2007 Volume 9, 2006 Volume 8, 2005 Volume 7, 2004 Volume 6, 2003 Volume 5, 2002 Volume 4, 2001 Volume 3, 2000 Volume 2, 1999 Volume 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.2018028834
pages 195-207

PORE STRUCTURE AND ITS EVOLUTION IN CHAR DURING SUPERCRITICAL WATER GASIFICATION PROCESS

Hui Jin
State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China
Chao Fan
State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China
Liejin Guo
State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China
Xiao Zhao
State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China
Changqing Cao
State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China
Wenwen Wei
State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi'an Jiaotong University, 28 Xianning West Road, Xi'an 710049, Shaanxi, China

RESUMO

Pore structure and its evolution provide key information for the heat and mass transfer in char particles and are important for supercritical water gasification reactor design. Supercritical water gasification was conducted in an autoclave, and nitrogen adsorption and scanning electron microscopy were applied for pore characterization in char. Specific surface area and pore volume showed an increasing tendency, but the growth of the specific surface area obviously slowed down as the reaction proceeded. Micropores with pore size of about 1.8 nm in original char increased obviously in quantity but remained nearly constant in size in the gasification process, whereas mesopores showed an increasing trend in both quantity and size from 3 to 5.5 nm. The surface fractal dimension calculated through the Frenkel–Halsey–Hill equation increased first and then decreased. These evolution characteristics may provide useful information for the establishment and optimization of kinetic models for supercritical water gasification.


Articles with similar content:

EFFICIENT REMOVAL OF ANIONIC DYE POLLUTANT BY NIMGAL LAYERED DOUBLE HYDROXIDES OF VARIABLE COMPOSITION
Catalysis in Green Chemistry and Engineering, Vol.1, 2018, issue 4
Ramesh Ch. Deka, Pankaj Bharali, Dipshikha Bharali
MOLECULAR DYNAMICS CALCULATION OF HYDROGEN CHEMISORPTION ON THE SURFACE OF SINGLE-WALLED CARBON NANOTUBES
Nanoscience and Technology: An International Journal, Vol.5, 2014, issue 3
Sergey Gromov, Yu. Ponomareva
ORDERED NANOSTRUCTURED CARBONS, NCCR-41 AND CMK-3: SYNTHESIS, CHARACTERIZATION, AND HYDROGEN SORPTION STUDIES
Catalysis in Green Chemistry and Engineering, Vol.1, 2018, issue 3
Talla V. R. Mohan, Balaiah Kuppan, Parasuraman Selvam
CATALYTIC CRACKING OF PALM OIL: KINETIC STUDY
International Journal of Energy for a Clean Environment, Vol.8, 2007, issue 1
Farouq Twaiq, Subhash Bhatia, Abdul Rahman Mohamed
Molecular Dynamics Simulation of Methane Adsorption in Shale Matrix
First Thermal and Fluids Engineering Summer Conference, Vol.14, 2015, issue
Ya-Ling He, Zhong-zhen Li, Li Chen, Wen-Quan Tao