Loading…
Hydrogen production from coke oven gas over LiNi/γ-Al 2O 3 catalyst modified by rare earth metal oxide in a membrane reactor
The performance of LiNi/-Al 2O 3 catalysts modified by rare earth metal oxide (La 2O 3 or CeO 2) packed on BCFNO membrane reactor was discussed for the partial oxidation of methane (POM) in coke oven gas (COG) at 875 °C. The NiO/γ-Al 2O 3 catalysts with different amounts of La 2O 3 and CeO 2 were pr...
Saved in:
Published in: | Journal of natural gas chemistry 2009, Vol.18 (4), p.407-414 |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | The performance of LiNi/-Al
2O
3 catalysts modified by rare earth metal oxide (La
2O
3 or CeO
2) packed on BCFNO membrane reactor was discussed for the partial oxidation of methane (POM) in coke oven gas (COG) at 875 °C. The NiO/γ-Al
2O
3 catalysts with different amounts of La
2O
3 and CeO
2 were prepared with the same preparation method and under the same condition in order to compare the reaction performance (oxygen permeation, CH
4 conversion, H
2 and CO selectivity) on the membrane reactor. The results show that the oxygen permeation flux increased significantly with LiNiREO
x/γ-Al
2O
3 (RE = La or Ce) catalysts by adding the element of rare earth especially the Ce during the POM in COG. Such as, the Li15wt%CeO
29wt%NiO/-Al
2O
3 catalyst with an oxygen permeation flux of 24.71 ml·cm
−2·min
−1 and a high CH
4 conversion was obtained in 875 °C. The resulted high oxygen permeation flux may be due to the added Ce that inhibited the strong interaction between Ni and Al
2O
3 to form the NiAl
2O
4 phase. In addition, the introduction of Ce leads up to an important property of storing and releasing oxygen. |
---|---|
ISSN: | 1003-9953 |
DOI: | 10.1016/S1003-9953(08)60131-0 |