Results 71 to 80 of about 4,829,668 (289)

A study on CO and CO2 methanation over Co/CeO2 and Co/ZrO2 catalysts

, 2021
학위논문(석사)--아주대학교 일반대학원 :에너지시스템학과,2021. 2CHAPTER 1 INTRODUCTION 1 1.1 Objective 1 1.2 Methanation catalysts 4 1.2.1 Active components 4 1.2.2 Supports 6 1.2.3 Promoters 8 1.3 Preparation methods 9 1.4 Reaction mechanism 12 1.4.1 CO2 methanation
NGUYEN THI THUY HA
core  

Soil Inorganic Electron Acceptors and Carbon Substrates Hierarchically Govern Wetland Methanogenesis Temperature Response

Advanced Science, EarlyView.
ABSTRACT Wetlands constitute Earth's largest natural methane (CH4) source, yet projections of their climate feedback remain uncertain due to poorly constrained temperature sensitivity (Q10‐CH4) of microbial methanogenesis. While water table dynamics have been demonstrated to regulate wetland methanogenesis by altering key soil conditions such as ...
Shuying Qiu, Qingfang Jing, Xuhui Zhou, Xiaoxin Sun, Zhenyu Wei, Baizhi Jiang, Hongyang Chen   +6 more
wiley   +1 more source

Thermodynamic Equilibrium Analysis of CO₂ Methanation through Equilibrium Constants: A Comparative Simulation Study

Physchem
In this study, a steady-state thermodynamic equilibrium evaluation of CO2 methanation was conducted. Calculations were performed by solving the material balance equations using the equilibrium constants of CO2 methanation and reverse water–gas shift ...
Bruno Varandas, Miguel Oliveira, Carlos Andrade, Amadeu Borges   +3 more
doaj   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

Novel Ni/MgO Catalysts from Mesoporous MgCO3 for Highly Efficient CO Methanation: Effects of Al and Si Stabilization [PDF]

, 2020
Methanation of syngas is a possible way to produce synthetic natural gas. Ni has been proven to be a good and cost-effective catalyst for this reaction.
Ocean, Cheung, Maria, Strømme, Yufei, Shi, Maria, Vall, Ruifeng, Li, Xiaoliang, Yan, Qianqian, Wang, Wenming, Hao   +7 more
core   +1 more source

Sustainable Materials Design With Multi‐Modal Artificial Intelligence

Advanced Science, EarlyView.
Critical mineral scarcity, high embodied carbon, and persistent pollution from materials processing intensify the need for sustainable materials design. This review frames the problem as multi‐objective optimization under heterogeneous, high‐dimensional evidence and highlights multi‐modal AI as an enabling pathway.
Tianyi Xu, Tianshuo Wei, Yan Ge, Bo Peng, Yue Li, Maolin Wang, Peng Wen, Chao Yang, Ye Wei   +8 more
wiley   +1 more source

Synthesis, CO₂ methanation performance and surface dynamics of high surface area LaNiO₃-derived catalysts

Materials Today Catalysis
The development of highly active and durable CO₂ methanation catalysts remains a major challenge, particularly because catalyst restructuring and sintering of the active particles can progressively reduce catalytic performance.
Mathias Barreau, Davide Salusso, Michael Haevecker, Detre Teschner, Anna Efimenko, Kamil Sobczak, Spyridon Zafeiratos   +6 more
doaj   +1 more source

Novel Catalysts for Low-temperature Co-methanation of CO and CO2 in Coke Oven Gas

, 2014
焦炉气是在炼焦过程中产生的副产品，主要成分是氢气和甲烷，还有一氧化碳、二氧化碳、烯烃等。每年中国焦炉气的产量约1200亿Nm3，其利用率约为55%，焦炉气通过甲烷化反应，将焦炉气中CO、CO2转化为甲烷，再通过变压吸附生产天然气具有较好经济价值和社会意义。甲烷化是强放热反应，反应器局部温升可以造成碳烃裂解而结碳，还可能容易使甲烷化催化剂烧结而失活。针对焦炉气甲烷化的工艺特点，本研究主要开发适于焦炉气中低温甲烷化催化剂。 本研究对于富氢焦炉气的甲烷化过程进行系统的分析和研究 ...
Rauf Razzaq
core  

Unlocking the role of Ni-Fe species in CO2 methanation [PDF]

The conversion of CO2 to methane has garnered immense interest, owing to its pivotal roles in reducing carbon emissions and producing environmentally friendly natural gas.
Rozhkovskaya, Alexandra, Peng, Hong, Yan, Penghui, Rabiee, Hesamoddin, Konarova, Muxina, Vogrin, John, Ahmed, Mohamed, Zhang, Xi, Weng, Yilun, Zhu, Zhonghua   +9 more
core   +1 more source

High‐Throughput Screening and Interpretable Machine Learning for Rational Design of Bimetallic Catalysts for Methane Activation

Advanced Science, EarlyView.
ABSTRACT Methane's efficient catalytic removal is vital for sustainable development. Bimetallic catalysts, though promising for methane activation, pose a design challenge due to their complex compositional space. This work introduces an integrated framework that combines high‐throughput density functional theory (DFT) and interpretable machine ...
Mingzhang Pan, Tian Zhang, Jiawei Dong, Yubao Xie, Kaifeng Zhong, Wei Guan, Haiqiao Wei, Changcheng Fu, Yaqiong Su   +8 more
wiley   +1 more source