Highly durable metal ensemble catalysts with full dispersion for automotive applications beyond single-atom catalysts

被引:335
作者
Jeong, Hojin [1 ]
Kwon, Ohmin [1 ]
Kim, Beom-Sik [1 ]
Bae, Junemin [1 ]
Shin, Sangyong [1 ]
Kim, Hee-Eun [1 ]
Kim, Jihan [1 ]
Lee, Hyunjoo [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Daejeon, South Korea
基金
新加坡国家研究基金会;
关键词
PENTACOORDINATED AL3+ IONS; WATER-GAS SHIFT; CO OXIDATION; PLATINUM; NANOPARTICLES; SITES; SIZE; SELECTIVITY; SURFACES; METHANOL;
D O I
10.1038/s41929-020-0427-z
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Reducing the size of metal nanoparticles down to the single-atom level has been actively pursued to maximize the use of precious metals. Recently, single-atom catalysts, in which all the metal atoms are isolated on a support with 100% dispersion, have received much attention. However, the lack of ensemble sites prevents valuable surface reactions that require metal proximity to occur. Here, we present metal (Pt, Pd and Rh) ensemble catalysts with 100% dispersion and a reduced metallic surface state. More specifically, nanoceria particles were anchored on Al-penta(3+) sites of activated gamma-alumina, and then metal was deposited and reduced. The ensemble catalysts are highly durable: their structure was maintained even after hydrothermal ageing at 900 degrees C for 24 h or after long-term reaction. These catalysts have superior activity and durability for three-way catalytic reactions and can provide insights beyond single-atom catalysts for heterogeneous catalysis.
引用
收藏
页码:368 / 375
页数:8
相关论文
共 53 条
[1]   Designed Catalysts from Pt Nanoparticles Supported on Macroporous Oxides for Selective Isomerization of n-Hexane [J].
An, Kwangjin ;
Alayoglu, Selim ;
Musselwhite, Nathan ;
Na, Kyungsu ;
Somorjai, Gabor A. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (19) :6830-6833
[2]   Size and Shape Control of Metal Nanoparticles for Reaction Selectivity in Catalysis [J].
An, Kwangjin ;
Somorjai, Gabor A. .
CHEMCATCHEM, 2012, 4 (10) :1512-1524
[3]   Evolution of the Atomic Structure of Ceria-Supported Platinum Nanocatalysts: Formation of Single Layer Platinum Oxide and Pt-O-Ce and Pt-Ce Linkages [J].
Avakyan, Leon A. ;
Kolpacheva, Natalia A. ;
Paramonova, Ekaterina V. ;
Singh, Jagdeep ;
Hartfelder, Urs ;
van Bokhoven, Jeroen A. ;
Bugaev, Lusegen A. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2016, 120 (49) :28057-28066
[4]   CO oxidation on SnO2 surfaces enhanced by metal doping [J].
Bae, Junemin ;
Kim, Jiwhan ;
Jeong, Hojin ;
Lee, Hyunjoo .
CATALYSIS SCIENCE & TECHNOLOGY, 2018, 8 (03) :782-789
[5]   Reaction-Induced Cluster Ripening and Initial Size-Dependent Reaction Rates for CO Oxidation on Ptn/TiO2(110)-(1x1) [J].
Bonanni, Simon ;
Ait-Mansour, Kamel ;
Harbich, Wolfgang ;
Brune, Harald .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (24) :8702-8707
[6]  
Bond GC, 1987, HETEROGENEOUS CATALY
[7]   Selective Hydrogenolysis of Polyols and Cyclic Ethers over Bifunctional Surface Sites on Rhodium-Rhenium Catalysts [J].
Chia, Mei ;
Pagan-Torres, Yomaira J. ;
Hibbitts, David ;
Tan, Qiaohua ;
Pham, Hien N. ;
Datye, Abhaya K. ;
Neurock, Matthew ;
Davis, Robert J. ;
Dumesic, James A. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (32) :12675-12689
[8]   Tuning selectivity of electrochemical reactions by atomically dispersed platinum catalyst [J].
Choi, Chang Hyuck ;
Kim, Minho ;
Kwon, Han Chang ;
Cho, Sung June ;
Yun, Seongho ;
Kim, Hee-Tak ;
Mayrhofer, Karl J. J. ;
Kim, Hyungjun ;
Choi, Minkee .
NATURE COMMUNICATIONS, 2016, 7
[9]   Identification of active sites in CO oxidation and water-gas shift over supported Pt catalysts [J].
Ding, Kunlun ;
Gulec, Ahmet ;
Johnson, Alexis M. ;
Schweitzer, Neil M. ;
Stucky, Galen D. ;
Marks, Laurence D. ;
Stair, Peter C. .
SCIENCE, 2015, 350 (6257) :189-192
[10]  
Ertl G., 2008, Handbook of Heterogeneous Catalysis, V1, DOI 10.1002/9783527619474.fmatter