coal char gasification
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Fuel ◽  
2022 ◽  
Vol 310 ◽  
pp. 122322
Author(s):  
Guanghua Lu ◽  
Yonghui Bai ◽  
Peng Lv ◽  
Jiaofei Wang ◽  
Xudong Song ◽  
...  

Fuel ◽  
2021 ◽  
Vol 301 ◽  
pp. 121064
Author(s):  
Meng Ma ◽  
Jiaofei Wang ◽  
Yonghui Bai ◽  
Peng Lv ◽  
Xudong Song ◽  
...  

Energy ◽  
2021 ◽  
Vol 229 ◽  
pp. 120724
Author(s):  
Qing He ◽  
Yan Gong ◽  
Lu Ding ◽  
Qinghua Guo ◽  
Kunio Yoshikawa ◽  
...  

Fuel ◽  
2021 ◽  
Vol 298 ◽  
pp. 120865
Author(s):  
Juan C. Maya ◽  
Robert Macías ◽  
Carlos A. Gómez ◽  
Farid Chejne

Energy ◽  
2021 ◽  
pp. 120677
Author(s):  
Zihang Zhang ◽  
Baojun Yi ◽  
Zhengshuai Sun ◽  
Qi Zhang ◽  
He Feng ◽  
...  

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 715
Author(s):  
Yong He ◽  
Ye Yuan ◽  
Zhihua Wang ◽  
Longlong Liu ◽  
Jiaxin Tan ◽  
...  

The gasification experiments of coal chars with CO2 were carried out isothermally, with K, Ca, Ni, and Zn chloride catalysts, adopting a thermal gravimetric analyzer (TGA) from 800 to 1100 °C. The kinetic characteristic of the samples were described using the volumetric model (VM), the grain model (GM), and the random pore model (PRM). The morphology patterns of the samples were tested applying X-ray diffraction (XRD) and the catalytic mechanisms concerning the phase changes were proposed. The results confirm that the gasification rate and char reactivities are enhanced by K, Ca and Ni chlorides, while ZnCl2 inhibited the process. The catalysis ability shows the following cation order: Ca > K > Ni > Zn. Among the models described above, PRM was proven to give the best fitting value and hence adopted to kinetics parameters calculation. The activation energies in promoting conditions were lower than that of the uncatalyzed cases. In view of the catalytic mechanism, the K metals tend to form intermediate complexes and repeatedly connect with coal char, while the Ca species may follow the oxidation-reduction mechanism and the Ni metals catalyze the gasification process.


2020 ◽  
Vol 34 (6) ◽  
pp. 6879-6893 ◽  
Author(s):  
Xintong Guo ◽  
Guozhang Chang ◽  
Xiaoli Tan ◽  
Xiude Hu ◽  
Qingjie Guo

Author(s):  
Hrusikesh Barik ◽  
Manaswita Bose ◽  
Tao Xu ◽  
Mahmud Kibria ◽  
Sankar Bhattacharya

ACS Omega ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 236-242
Author(s):  
Kazuhiro Kumabe ◽  
Yuya Hasegawa ◽  
Hiroshi Moritomi

2019 ◽  
Vol 16 (14) ◽  
pp. 1144-1151 ◽  
Author(s):  
Junwei Chen ◽  
Weibin Chen ◽  
Ru Ji ◽  
Yang Jiao ◽  
Xidong Wang

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