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通过金属镍和磷化镍在干甲烷重整中的协同作用提高Ni/AlO催化剂的抗结焦性能

Improving Anti-Coking Properties of Ni/AlO Catalysts via Synergistic Effect of Metallic Nickel and Nickel Phosphides in Dry Methane Reforming.

作者信息

Shi Yu, Wang Shiwei, Li Yiming, Yang Fan, Yu Hongbo, Chu Yuting, Li Tong, Yin Hongfeng

机构信息

Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo 315201, China.

出版信息

Materials (Basel). 2022 Apr 22;15(9):3044. doi: 10.3390/ma15093044.

DOI:10.3390/ma15093044
PMID:35591379
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9101347/
Abstract

A series of NiP-x/AlO catalysts containing different ratio of metallic nickel to nickel phosphides, prepared by varying Ni/P molar ratio of 4, 3, 2 through a co-impregnation method, were employed to investigate the synergistic effect of metallic nickel-nickel phosphides in dry methane reforming reaction. The Ni/AlO catalyst indicates good activity along with severe carbon deposition. The presence of phosphorus increases nickel dispersion as well as the interaction between nickel and alumina support, which results in smaller nickel particles. The co-existence of metallic nickel and nickel phosphides species is confirmed at all the P contained catalysts. Due to the relative stronger CO dissociation ability, the NiP-x/AlO catalysts indicate obvious higher resistance of carbon deposition. Furthermore, because of good balance between CH dissociation and CO dissociation, NiP-2/AlO catalyst exhibits best resistance of carbon deposition, few carbon depositions were formed after 50 h of dry methane reforming.

摘要

通过共浸渍法，将镍磷摩尔比分别设定为4、3、2，制备了一系列金属镍与磷化镍比例不同的NiP-x/AlO催化剂，用于研究金属镍-磷化镍在甲烷干重整反应中的协同作用。Ni/AlO催化剂表现出良好的活性，但同时伴有严重的积碳现象。磷的存在增加了镍的分散度以及镍与氧化铝载体之间的相互作用，从而使镍颗粒更小。在所有含磷催化剂中均证实了金属镍和磷化镍物种的共存。由于相对较强的CO解离能力，NiP-x/AlO催化剂表现出明显更高的抗积碳性能。此外，由于CH解离和CO解离之间的良好平衡，NiP-2/AlO催化剂表现出最佳的抗积碳性能，在甲烷干重整50小时后几乎没有形成积碳。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/a1fb95567249/materials-15-03044-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b9bdc64130d4/materials-15-03044-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b8082ce63e22/materials-15-03044-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/98e2f3d0d7f7/materials-15-03044-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b43598574107/materials-15-03044-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/db877b1e8185/materials-15-03044-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b85454563046/materials-15-03044-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/038d5ebfd5cd/materials-15-03044-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/96cbb5b195a7/materials-15-03044-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/c969af86e527/materials-15-03044-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/a1fb95567249/materials-15-03044-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b9bdc64130d4/materials-15-03044-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b8082ce63e22/materials-15-03044-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/98e2f3d0d7f7/materials-15-03044-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b43598574107/materials-15-03044-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/db877b1e8185/materials-15-03044-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/b85454563046/materials-15-03044-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/038d5ebfd5cd/materials-15-03044-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/96cbb5b195a7/materials-15-03044-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/c969af86e527/materials-15-03044-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6e34/9101347/a1fb95567249/materials-15-03044-g010.jpg

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Dry reforming of methane by stable Ni-Mo nanocatalysts on single-crystalline MgO.稳定的 Ni-Mo 纳米催化剂在单晶 MgO 上进行甲烷干重整。
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