Highly active and stable MoS2-TiO2 nanocomposite catalyst for slurry-phase phenanthrene hydrogenation

催化作用 纳米复合材料 X射线光电子能谱 相(物质) 材料科学 化学工程 高压灭菌器 化学 有机化学 纳米技术 冶金 工程类
作者
Chenggong Yang,Donge Wang,Rong Huang,Jianqiang Han,Na Ta,Huaijun Ma,Wei Qu,Zhendong Pan,Congxin Wang,Zhijian Tian
出处
期刊:Chinese Journal of Catalysis [Elsevier BV]
卷期号:46: 125-136 被引量:11
标识
DOI:10.1016/s1872-2067(22)64184-6
摘要

MoS2-TiO2 nanocomposite catalysts with Janus structure were synthesized via facile one-step solvothermal method. X-ray diffraction, high resolution transmission electron microscope, NO chemisorption and X-ray photoelectron spectroscopy were applied to characterize the composition and nanostructure of the MoS2-TiO2 nanocomposite catalysts. Experimental results revealed that the MoS2-TiO2 nanocomposite catalysts with Janus structure were composed of MoS2 layers (few stacked layers of 1–3 and short slabs of 2–10 nm) and TiO2 nanoparticles (10–15 nm), which have strong MoS2-TiO2 interaction with transferring electrons from TiO2 to MoS2. Catalytic performance of MoS2-TiO2 nanocomposite catalysts for phenanthrene hydrogenation was investigated and compared with that of MoS2 catalyst in an autoclave reactor with high temperature and high pressure. The phenanthrene conversion over the MoS2-TiO2 nanocomposite catalyst with MoS2 content of 15.0 wt% (MoS2-TiO2-15) can reach 91.6%, which was much higher than 50.4% for MoS2 catalyst and 76.8% for conventional supported MoS2/TiO2-15 catalyst. After 7 cycles of phenanthrene hydrogenation reaction, the phenanthrene conversion over MoS2-TiO2-15 nanocatalyst remained at 68.6%, while the phenanthrene conversion over MoS2 catalyst was reduced to only 25.4%. The MoS2-TiO2 nanocomposite catalysts exhibit significantly enhanced catalytic activity and stability for slurry phase hydrogenation. The enhanced catalytic activity originates from the exposure of abundant coordinatively unsaturated Mo atoms. The enhanced stability results from the Janus structure with stable MoS2-TiO2 interaction and Mo–O–Ti bonds, which anchor MoS2 layers on the surface of TiO2 nanoparticles to avoid the curling, folding and agglomeration of MoS2 layers. This is an important finding on slurry phase catalytic hydrogenation performances of MoS2-based nanocomposite catalysts with Janus structure. Shedding light on the research of Janus nanocomposite catalysts in catalytic hydrogenation is significantly crucial for the development of effective and stable hydrogenation catalysts.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
风一样完成签到,获得积分10
1秒前
JamesPei应助zhinian28采纳,获得10
1秒前
量子星尘发布了新的文献求助10
2秒前
汉堡包应助素直采纳,获得10
2秒前
一二三发布了新的文献求助10
2秒前
3秒前
3秒前
3秒前
ppzz1220完成签到,获得积分10
4秒前
彭于彦祖应助瘦瘦的鬼神采纳,获得30
4秒前
Halo完成签到,获得积分10
4秒前
5秒前
llp完成签到,获得积分10
5秒前
飞云发布了新的文献求助10
5秒前
科目三应助Evied采纳,获得10
6秒前
6秒前
董老师完成签到,获得积分10
6秒前
葡萄蛋糕完成签到 ,获得积分10
7秒前
yhsohrab完成签到,获得积分10
8秒前
zyl完成签到,获得积分10
8秒前
gengxw完成签到,获得积分10
8秒前
烟花应助jsinm-thyroid采纳,获得10
8秒前
研友_VZG7GZ应助lige采纳,获得10
8秒前
Miley发布了新的文献求助10
8秒前
9秒前
9秒前
田様应助机灵的胡萝卜采纳,获得10
9秒前
ll发布了新的文献求助10
9秒前
CyrusSo524应助白给的吉采纳,获得10
10秒前
10秒前
ke完成签到,获得积分10
10秒前
执着的雨灵完成签到 ,获得积分10
11秒前
rtcpu发布了新的文献求助20
11秒前
小九完成签到 ,获得积分10
11秒前
12秒前
白给完成签到,获得积分10
13秒前
李健的小迷弟应助Ryan采纳,获得10
14秒前
黄俊发布了新的文献求助10
14秒前
音悦台完成签到,获得积分10
14秒前
心想事橙完成签到,获得积分10
14秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3969335
求助须知:如何正确求助?哪些是违规求助? 3514162
关于积分的说明 11172430
捐赠科研通 3249456
什么是DOI,文献DOI怎么找? 1794853
邀请新用户注册赠送积分活动 875437
科研通“疑难数据库(出版商)”最低求助积分说明 804809