亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整的填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Atomic intimacy in Pd1Ni/SiO2 single-atom alloy prepared by galvanic replacement for enhanced semi-hydrogenation of acetylene

催化作用 乙炔 选择性 纳米晶 金属 反应性(心理学) 材料科学 原电池 合金 电子转移 化学工程 无机化学 化学 纳米技术 光化学 冶金 有机化学 医学 替代医学 病理 工程类
作者
Sixu Liu,Danfeng Wu,Fan Yang,Kai Chen,Zhongbin Luo,Jiwei Li,Zhun Zhang,Jiafei Zhao,Lina Zhang,Yu-Chen Zhang,Hailong Zhang,Shaolong Wan,Yung‐Kang Peng,Kelvin H. L. Zhang,Haifeng Xiong
出处
期刊:Chemical Engineering Journal [Elsevier]
卷期号:481: 148658-148658 被引量:3
标识
DOI:10.1016/j.cej.2024.148658
摘要

Metal single-atom alloys (SAAs) are important catalysts in many catalytic reactions, while the preparation of metal SAA catalysts is a major challenge because the metal species can inevitably deposit on both support and the host metal when using conventional preparation methods, leading to decreased catalytic performances. In this work, we report the preparation of metal SAA by the galvanic replacement (GR) to selectively deposit metal species on the host nanocrystals (NCs) prior to loading on a support. It includes the first synthesis of Ni NCs by colloidal method and the following deposition of Pd atoms onto Ni NCs via GR. After that, the Pd1Ni nanocrystal alloys were deposited onto SiO2 and the atomic intimacy of Pd with Ni was confirmed by multiple characterization techniques. The Pd1Ni/SiO2 SAA prepared by GR presented improved catalytic reactivity in semi-hydrogenation of acetylene, as compared to the reference PdNi/SiO2 catalyst prepared by impregnation. Moreover, the Pd1Ni/SiO2-GR catalyst showed higher C2H4 selectivity in a wide range of temperatures (30–180 °C), which was better than Pd1Ni/SiO2-I SAA, Pd/NiO-I and Pd/SiO2-I catalysts prepared by impregnation. The DFT explains the enhanced selectivity, which is due to the electron transfer from Ni nanocrystal to Pd single atoms. The electron transfer was resulted from the improved intimacy of Pd atoms and Ni nanocrystals.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

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
脑洞疼应助hahaha123213123采纳,获得10
3秒前
8秒前
13秒前
所所应助sun采纳,获得10
15秒前
无花果应助哭泣的成仁采纳,获得10
16秒前
Lucas应助hahaha123213123采纳,获得10
26秒前
29秒前
34秒前
Akim应助hahaha123213123采纳,获得10
41秒前
1分钟前
1分钟前
Eric800824完成签到 ,获得积分10
1分钟前
1分钟前
Langsam发布了新的文献求助10
1分钟前
1分钟前
1分钟前
1分钟前
爱笑的毛衣完成签到,获得积分10
1分钟前
Hello应助Langsam采纳,获得30
1分钟前
1分钟前
1分钟前
sun发布了新的文献求助10
1分钟前
2分钟前
zeroyee发布了新的文献求助10
2分钟前
2分钟前
小蘑菇应助yooyoo采纳,获得10
2分钟前
3分钟前
天空之城发布了新的文献求助50
3分钟前
caca完成签到,获得积分10
4分钟前
充电宝应助科研通管家采纳,获得10
4分钟前
李爱国应助科研通管家采纳,获得10
4分钟前
Fung完成签到,获得积分10
4分钟前
墨twilight完成签到 ,获得积分0
5分钟前
华仔应助开心努力毕业版采纳,获得10
5分钟前
5分钟前
5分钟前
@-@发布了新的文献求助10
5分钟前
koh完成签到,获得积分10
5分钟前
天天快乐应助sun采纳,获得10
5分钟前
思源应助科研通管家采纳,获得10
6分钟前
高分求助中
Exploring Mitochondrial Autophagy Dysregulation in Osteosarcoma: Its Implications for Prognosis and Targeted Therapy 3000
Impact of Mitophagy-Related Genes on the Diagnosis and Development of Esophageal Squamous Cell Carcinoma via Single-Cell RNA-seq Analysis and Machine Learning Algorithms 2000
Migration and Wellbeing: Towards a More Inclusive World 1000
Green Transition Impacts on the Economy, Society, and Environment 600
QMS18Ed2 | process management. 2nd ed 600
晶体非线性光学:带有 SNLO 示例(第二版) 570
LNG as a marine fuel—Safety and Operational Guidelines - Bunkering 560
热门求助领域 (近24小时)
化学 医学 材料科学 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 基因 遗传学 物理化学 催化作用 免疫学 细胞生物学 电极
热门帖子
关注 科研通微信公众号,转发送积分 2951124
求助须知:如何正确求助?哪些是违规求助? 2612503
关于积分的说明 7037101
捐赠科研通 2251341
什么是DOI,文献DOI怎么找? 1194685
版权声明 590654
科研通“疑难数据库(出版商)”最低求助积分说明 584361