Results 51 to 60 of about 101,799 (216)

Effect of SiO2 on loss of catalysis of inherent metallic species in CO2 gasification of coke from lignite

Carbon Resources Conversion, 2019
Inherent metallic species retained by coal char or coke, such as Na and Ca, behave as catalysts in gasification. The char/coke normally contains inherent SiO2, which can react with the inherent catalysts to form silicates, resulting in catalyst ...
Cheolyong Choi, U.P.M. Ashik, Shinji Kudo, Kazuya Uebo, Koyo Norinaga, Jun-ichiro Hayashi   +5 more
doaj   +1 more source

Entrained-Flow Coal Gasification Process Simulation with the Emphasis on Empirical Char Conversion Models Optimization Procedure

Energies, 2021
Computational fluid dynamics (CFD) modeling of an entrained-flow reactor is demonstrated and compared with experimental data. The study is focused on char conversion modeling and its impact on gasification simulation results.
Jakub Mularski, Norbert Modliński
doaj   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

Carbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey, Rashid Al‐Hajri, Ala'a H. Al‐Muhtaseb, Hussein A. Younus, Mohammed Al‐Abri   +4 more
wiley   +1 more source

Syngas Compositions And Kinetics Of South Kalimantan Lignite Coal Char Gasification With Steam

MATEC Web of Conferences, 2018
The aim of this research was to investigate the gasification of a South Kalimantan lignite coal char in the temperature range of 873-1073 ºK and steam condition to evaluate the reactions rates and the product gas compositions.
Rumbino Yusuf, Purwono Suryo, Hidayat Muslikhin, Sulistyo Hary   +3 more
doaj   +1 more source

Effects of Biomass Feedstocks and Gasification Conditions on the Physiochemical Properties of Char

Energies, 2013
Char is a low-value byproduct of biomass gasification and pyrolysis with many potential applications, such as soil amendment and the synthesis of activated carbon and carbon-based catalysts.
Raymond L. Huhnke, Wenqiao Yuan, Donghai Wang, Danielle Bellmer, Krushna Patil, Ajay Kumar, Kezhen Qian   +6 more
doaj   +1 more source

Interfacial Electronic Coupling in the GeSe2/Volcanic‐Rock–Like Carbon Framework Activates Reversible Intermediate Conversion for High‐Rate Sodium Storage

Carbon Energy, EarlyView.
A combined sol–gel/solid‐state approach was developed to integrate GeSe2 with a “volcanic‐rock”–like carbon framework (C). C incorporation reactivates the otherwise irreversible intermediates Na2Ge2Se5 and Na2GeSe3, thereby suppressing irreversible Na+ consumption.
Hailong Yang, Jiahao Zhao, Zhongmin Lang, Rui Li, Boyu Sun, Jianping Long, Jinlong Cui, Anjun Hu   +7 more
wiley   +1 more source

The carbon dioxide gasification characteristics of biomass char samples and their effect on coal gasification reactivity during co-gasification

, 2018
The carbon dioxide gasification characteristics of three biomass char samples and bituminous coal char were investigated in a thermogravimetric analyser in the temperature range of 850–950 °C. Char SB exhibited higher reactivities (Ri, Rs, Rf) than chars
Hein W.J.P. Neomagus, Neomagus, Hein W.J.P., Bunt, John R., Lihle D. Mafu, Mafu, Lihle D., Gregory N. Okolo, Christien A. Strydom, Everson, Raymond C., Strydom, Christien A., Raymond C. Everson, John R. Bunt   +10 more
core   +1 more source

Kinetic study of coals gasification into carbon dioxide atmosphere

MATEC Web of Conferences, 2015
The solid fuel gasification process was investigated to define chemical reactions rate and activation energy for a gas-generator designing and regime optimizing.
Korotkikh A.G., Slyusarskiy K.V.
doaj   +1 more source

Challenges of Bio‐Syngas Conversion to High‐Value‐Added Liquid Chemicals and Fuels via COx Hydrogenation

Carbon Energy, EarlyView.
Converting biomass‐derived syngas into value‐added fuels and chemicals offers a promising route toward carbon neutrality, yet unfavorable H2/COx ratios, elevated CO2 levels, and trace impurities pose persistent obstacles. This review examines strategies spanning syngas conditioning, impurity‐tolerant catalyst development, and integrated process design,
Xuan Bie, Shiyu Zhang, Yuyao Yang, Shijie Yu, Jiahui Hu, Qinghai Li, Yanguo Zhang, Hui Zhou   +7 more
wiley   +1 more source

Experimental Investigation on the Effect of Dry and Wet Activation Processes on the Morphological Properties of Activated Carbon Derived From Sugarcane Bagasse

Carbon Innovation, EarlyView.
Synthesis and characterization of sugarcane bagasse‐derived activated carbon via KOH‐assisted dry and wet activation. ABSTRACT This study explores the impact of activation processes on the morphological properties of activated carbon. Carbon is initially produced through vacuum pyrolysis at three temperatures (500°C, 600°C, and 700°C), with a heating ...
Sachin Channappa Hallad, N. L. Panwar, Kavankumar Venkatareddy, J. K. Maherchandani, Trilok Gupta, S. S. Meena   +5 more
wiley   +1 more source