Results 61 to 70 of about 1,754,688 (187)

Study on correlation between pore development and strength characteristics of tar-rich coal in different coal seams

Meikuang Anquan, 2023
In the process of coal mining, the coal body is subjected to external force, resulting in pore penetration and strength decline, which is easy to cause engineering disasters such as roadway surrounding rock instability and roof collapse. In order to study the correlation and influence mechanism between pore distribution and strength characteristics ...
SHEN Yanjun, MA Wen, WANG Xu, SHI Qingmin, ZHANG Lei, LYU You, XU Hanhua   +6 more
openaire   +1 more source

Migration law for random parameters rockfall in steeply dipping coal seams

Frontiers in Earth Science, 2023
The migration process of rockfall has certain complexity and randomness in steeply dipping coal seams (SDCS). The three-dimensional random migration of rockfall with random parameters cannot be accurately simulated.
Ming Liu, Ming Liu, Jie Chen, Yang Xiao, Wenyu Lv   +4 more
doaj   +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

Pore structure and permeability evolution law of tar-rich coal under high temperature

Meitan kexue jishu
The preferential extraction of oil and gas from tar-rich coal under medium-low temperature pyrolysis conditions is an important development direction for the green and low-carbon development of tar-rich coal resources.
Xicai GAO, Zhenghui LIU, Yongping WU, Xiaobing TONG, Kaixiang MA   +4 more
doaj   +1 more source

A novel bubbling fluid bed reactor for the autothermal pyrolysis of waste plastics

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract A new pilot‐scale fluidized bed reactor operated under continuous conditions was developed and tested for the thermal pyrolysis of high‐density polyethylene (HDPE). The study focused on assessing the reliability and operability of the system under different operating conditions (400–550°C), while monitoring mass and energy balances, product ...
Khadija Olivia Ogoula Igouwe, Tchini Sévérin Tanoh, Jasmin Blanchard, Inès Esma Achouri, Nicolas Abatzoglou   +4 more
wiley   +1 more source

A log-based method for evaluating the tar yield of tar-rich coal

Objective As a kind of coal-based oil and gas resource, tar-rich coal is significant for the supply of oil and gas resources, as well as the clean and efficient utilization of coals.
Shuangming, WANG, Hongliang, WU, Guiwen, WANG, Zhou, FENG, Kewen, WANG, Han, TIAN, Ning, LI   +6 more
core   +1 more source

Electrolytic (C2CNT) Carbon Nanotubes Made From CO2 as an Inexpensive Carbon Sink and High‐Capacity Li‐Ion Battery Graphite Replacement

EcoEnergy, EarlyView.
Carbon‐negative carbon nanotubes produced by molten CO2 electrolysis offer a low‐cost, high‐performance alternative to graphite in Li‐ion battery anodes. Replacing conventional carbon materials with electrolytic CNTs can improve battery capacity and charging performance while reducing costs and contributing to carbon mitigation.
Gad Licht, Stuart Licht
wiley   +1 more source

Anchoring MoS2 Petal‐Like Nanosheets on Coal‐Based Carbon Nanofibers by Surface Bonding Enable Li+/Na+ Batteries to Achieve Fast‐Charging Capabilities

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The unique structure connected by CS and COS interfacial bonds accelerates the reaction kinetics of lithium/sodium‐ion storage, while the addition of coal led to an increase in the mechanical strength of the carbon nanofibers, which improved the conductivity and stability of the materials.
Zhenjiang Lu, Qiuye Deng, Gaoyuan Liu, Xinxin Yin, Nana Zheng, Jing Xie, Jindou Hu, Yali Cao, Dianzeng Jia   +8 more
wiley   +1 more source

A Review of In-situ Pyrolysis Research on Tar-rich Coal and Oil Shale

Sustainability in Environment
As two important unconventional oil and gas resources, the in-situ pyrolysis technologies of tar-rich Coal and oil shale are key approaches to realize the clean and efficient utilization of resources, alleviate the contradiction between oil and gas supply and demand, and help achieve the “double carbon” goals. Both of them share the core characteristic
Yongping Wu, Baoheng Liu
openaire   +1 more source

Heterogeneous Single/Dual‐Atom Electrocatalysts in Lithium–Sulfur Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review summarizes recent advances in single‐atom and dual‐atom electrocatalysts for high‐performance lithium–sulfur batteries. The text systematically covers the classification of catalysts by active metal centers, key synthesis methods, in situ characterization for mechanistic insights, and electrocatalytic mechanisms.
Wenbin Li, Ying Xin, Zhaoliang Zhang, Jin Wang   +3 more
wiley   +1 more source