Enhanced Stability and Catalytic Performance of Active Rh Sites on Al2O3 Via Atomic Layer Deposited ZrO2

被引：10

作者：

Guo, Feng ^{[1
,2
]}

Li, Jingwei ^{[3
]}

Zhang, Yibo ^{[2
,4
,5
]}

Yang, Xiangguang ^{[2
,4
,5
]}

机构：

[1] Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China

[2] Chinese Acad Sci, Ganjiang Innovat Acad, Jiangxi Inst Rare Earths, Ganzhou 341000, Peoples R China

[3] Shanxi Datong Univ, Coll Chem & Chem Engn, Datong 037009, Peoples R China

[4] Chinese Acad Sci, Changchun Inst Appl Chem, Jilin Prov Key Lab Green Chem & Proc, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[5] Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2022年 / 13卷 / 38期

基金：

中国国家自然科学基金;

关键词：

NO-CO REACTION; DISPERSED RH; RHODIUM; REDUCTION; EMISSIONS; OXIDATION; RH/AL2O3; STEAM; DEACTIVATION; PASSIVATION;

D O I：

10.1021/acs.jpclett.2c02219

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：

Modulating the Rh active sites on surfaces of Al2O3 is crucial to developing effective three-way catalysts. Herein, an ultralow amount of ZrO2 (0.0179%) was deposited onto Al2O3 nanorods via atomic layer deposition (ALD) to form a catalyst with both thermal stability and low-temperature activity. The results demonstrate that the ALD-ZrO2 is conducive to improve the catalytic activity of the Rh site and inhibit the formation of irreducible Rh species at high temperature. The obtained catalysts show satisfactory performance for a model NO-CO reaction even after thermal aging at 1050 degrees C. This strategy shows that a molecularly precise synthesis can lead to the robust promotion of Rh activity under low temperature and provide a promising path toward reducing the deactivation of catalysts at high temperature.

引用

页码：8825 / 8832

页数：8

共 60 条

[1] Impacts and mitigation of excess diesel-related NOx emissions in 11 major vehicle markets [J].

Anenberg, Susan C. ;

Miller, Joshua ;

Injares, Ray M. ;

Du, Li ;

Henze, Daven K. ;

Lacey, Forrest ;

Malley, Christopher S. ;

Emberson, Lisa ;

Franco, Vicente ;

Klimont, Zbigniew ;

Heyes, Chris .

NATURE, 2017, 545 (7655) :467-+

[2] FTIR study of the reduction reaction of NO by CO over Rh/SiO2 catalysts with different crystallite size [J].

Araya, P ;

Gracia, F ;

Cortés, J ;

Wolf, EE .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 38 (02) :77-90

[3]

Aydin C., 2012, ANGEW CHEM, V124, P6031

[4] Significant Advances in C1 Catalysis: Highly Efficient Catalysts and Catalytic Reactions [J].

Bao, Jun ;

Yang, Guohui ;

Yoneyama, Yoshiharu ;

Tsubaki, Noritatsu .

ACS CATALYSIS, 2019, 9 (04) :3026-3053

[5] Sub-nanometer Thin Oxide Film Sensing with Localized Surface Phonon Polaritons [J].

Berte, Rodrigo ;

Gubbin, Christopher R. ;

Wheeler, Virginia D. ;

Giles, Alexander J. ;

Giannini, Vincenzo ;

Maier, Stefan A. ;

De Liberato, Simone ;

Caldwell, Joshua D. .

ACS PHOTONICS, 2018, 5 (07) :2807-2815

[6] Effective Surface Passivation of InP Nanowires by Atomic-Layer-Deposited Al2O3 with POx Interlayer [J].

Black, L. E. ;

Cavalli, A. ;

Verheijen, M. A. ;

Haverkort, J. E. M. ;

Bakkers, E. P. A. M. ;

Kessels, W. M. M. .

NANO LETTERS, 2017, 17 (10) :6287-6294

[7] An investigation of the deactivation of Rh/alumina catalysts under strong oxidising conditions [J].

Burch, R ;

Loader, PK ;

Cruise, NA .

APPLIED CATALYSIS A-GENERAL, 1996, 147 (02) :375-394

[8]

Cao A, 2010, NAT MATER, V9, P75, DOI [10.1038/NMAT2584, 10.1038/nmat2584]

[9] Atomic-scale engineering of metal-oxide interfaces for advanced catalysis using atomic layer deposition [J].

Cao, Lina ;

Lu, Junling .

CATALYSIS SCIENCE & TECHNOLOGY, 2020, 10 (09) :2695-2710

[10]

Chang PL, 2001, NANO LETT, V1, P253, DOI 10.1021/n1015501c

← 1 2 3 4 5 6 →