The Partial Oxidation of Methane to Hydrogen over M(1)-Ni(5)/AlCeO3(M=Ce, La, Y) Catalysts
Issue:
Volume 10, Issue 1, January 2022
Pages:
1-10
Received:
3 December 2021
Accepted:
23 February 2022
Published:
4 March 2022
Abstract: The catalytic yields of partial oxidation of methane (POM) to hydrogen over M(1)-Ni(5)/Al2O3(M=, Ce, La, Y) catalysts were investigated using a fixed bed flow reactor under atmospheric pressure to solve the global warming problem and clean energy demand. Catalyst activity is evaluated by performing the reaction of POM to hydrogen, and active sites of the catalyst are verified by instrumental analysis. The catalysts were characterized by XPS, XRD, FESEM, EDS, FETEM. The crystal phase behavior of reduced La(1)-Ni(5)/AlCeO3 catalysts before and after the reaction were studied by XRD analysis. The crystalline phase of Ni and La on La(1)-Ni(5)/AlCeO3 reduced before reaction was not obserbed due to uniform distribution of nanoparticles. FESEM and EDS analyses show that nanoparticles of Ni, La and Ce are uniformly distributed on the catalyst surface. In addition, TEM images and EDS mapping of La, Ni, Ce, O, and Al for a reduced La(1)-Ni(5)/AlCeO3 catalyst before reaction show that the elements are well distributed. When 1 wt% of La was added to Ni(5)/AlCeO3 catalyst, XPS results showed that O-, Ovacancy, and O2- species, Ni2p3/2, and Ce3d5/2 increased 1.4, 52.7, 6.3% on the La(1)- Ni(5)/ AlCeO3 catalyst, respectively. The yield of hydrogen on the La(1)- Ni(5)/ AlCeO3 catalyst was 89.1%, which was much better than that of M(1)-Ni(5)/Al2O3(M=Ce, Y) catalysts. As Ce4+/Ce3+ ions in CeO2 produced by the reaction of AlCeO3 with oxygen were substitute to La3+, Ni2+, it made oxygen vacancies in the lattice and further improved the hydrogen yield by increasing the dispersion of Ni atoms with strong metal- support interaction (SMSI) effect.
Abstract: The catalytic yields of partial oxidation of methane (POM) to hydrogen over M(1)-Ni(5)/Al2O3(M=, Ce, La, Y) catalysts were investigated using a fixed bed flow reactor under atmospheric pressure to solve the global warming problem and clean energy demand. Catalyst activity is evaluated by performing the reaction of POM to hydrogen, and active sites ...
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Analysis and Prospect of Key Technologies of Hydrogen Energy Storage and Transportation
Zhuocheng Yin,
Fuqiang Zhang,
Wenyi Duan,
Qing Ma,
Jun Hao,
Qingren Liu,
Wenyu Gu
Issue:
Volume 10, Issue 1, January 2022
Pages:
11-17
Received:
26 February 2022
Accepted:
10 March 2022
Published:
18 March 2022
Abstract: Combined with various physical objects, this paper introduces in detail the development status of various key technologies of hydrogen energy storage and transportation in the field of hydrogen energy development in China and the application status of relevant equipment, mainly including key technologies of hydrogen energy storage and transportation such as gaseous hydrogen, liquid hydrogen, solid material hydrogen storage and organic liquid hydrogen storage, as well as pipeline transportation technology after natural gas hydrogen mixing. The related hydrogen storage materials and their main related equipment are introduced in detail, and the specific advantages and main disadvantages of various hydrogen storage and transportation technologies and equipment are described in detail. Finally, it is analyzed and pointed out in detail that liquid and solid hydrogen storage has the advantages of high density, safety and convenient transportation. With the popularization and application of hydrogen fuel cell technology, hydrogen energy is expected to be widely used in the field of transportation; Hydrogen doped natural gas pipeline transportation is the inevitable development trend of large-scale and large-area regional radiation application of hydrogen energy, and the relevant technologies and standards still need to be further improved; Finally, the development direction of hydrogen energy storage and transportation technology and key equipment in the future, as well as the key points and suggestions of feasibility technology research are clarified.
Abstract: Combined with various physical objects, this paper introduces in detail the development status of various key technologies of hydrogen energy storage and transportation in the field of hydrogen energy development in China and the application status of relevant equipment, mainly including key technologies of hydrogen energy storage and transportatio...
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