Your browser doesn't support javascript.
loading
Propane Dehydrogenation Catalyzed by Isolated Pt Atoms in ≡SiOZn-OH Nests in Dealuminated Zeolite Beta.
Qi, Liang; Babucci, Melike; Zhang, Yanfei; Lund, Alicia; Liu, Lingmei; Li, Jingwei; Chen, Yizhen; Hoffman, Adam S; Bare, Simon R; Han, Yu; Gates, Bruce C; Bell, Alexis T.
Afiliación
  • Qi L; Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Babucci M; Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States.
  • Zhang Y; Department of Chemical Engineering, University of California, Davis, California 95616, United States.
  • Lund A; Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
  • Liu L; Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States.
  • Li J; College of Chemistry, University of California, Berkeley, California 94720, United States.
  • Chen Y; Advanced Membranes and Porous Materials (AMPM) Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.
  • Hoffman AS; Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies & School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
  • Bare SR; Multi-scale Porous Materials Center, Institute of Advanced Interdisciplinary Studies & School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China.
  • Han Y; Department of Chemical Engineering, University of California, Davis, California 95616, United States.
  • Gates BC; Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.
  • Bell AT; Stanford Synchrotron Radiation Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States.
J Am Chem Soc ; 143(50): 21364-21378, 2021 Dec 22.
Article en En | MEDLINE | ID: mdl-34881868
ABSTRACT
Atomically dispersed noble metal catalysts have drawn wide attention as candidates to replace supported metal clusters and metal nanoparticles. Atomic dispersion can offer unique chemical properties as well as maximum utilization of the expensive metals. Addition of a second metal has been found to help reduce the size of Pt ensembles in bimetallic clusters; however, the stabilization of isolated Pt atoms in small nests of nonprecious metal atoms remains challenging. We now report a novel strategy for the design, synthesis, and characterization of a zeolite-supported propane dehydrogenation catalyst that incorporates predominantly isolated Pt atoms stably bonded within nests of Zn atoms located within the nanoscale pores of dealuminated zeolite Beta. The catalyst is stable in long-term operation and exhibits high activity and high selectivity to propene. Atomic resolution images, bolstered by X-ray absorption spectra, demonstrate predominantly atomic dispersion of the Pt in the nests and, with complementary infrared and nuclear magnetic resonance spectra, determine a structural model of the nested Pt.
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Am Chem Soc Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos