Maqola

CO2 Hydrogenation to Methanol on CuO-ZnO/SiO2 and CuO-ZnO/CeO2-SiO2 Catalysts Synthesized with β-Cyclodextrin Template

Andrey E. VertepovChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaAnna FedorovaChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaAlexander M. BatkinLaboratory of Development and Research of Polyfunctional Catalysts, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, RussiaA.V. KnotkoChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaК. И. МаслаковChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaVladimir D. DoljenkoChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaAlexander V. VasilievChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaGennadiy KapustinLaboratory of Development and Research of Polyfunctional Catalysts, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, RussiaТ. Б. ШаталоваChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaN. M. SorokinaChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaЛ. М. КустовChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaИ. В. МорозовChemistry Department, Lomonosov Moscow State University, 119991 Moscow, RussiaAlexander L. KustovChemistry Department, Lomonosov Moscow State University, 119991 Moscow, Russia

2023en

ABI

Annotatsiya

A series of mixed copper (II)—zinc oxide catalysts supported on unmodified and ceria-modified silica supports were synthesized using β-cyclodextrin as a template. The novelty of this work lies in the use of cyclosextrins for the template synthesis of catalyst supports. The obtained samples were analyzed by XRD, SEM-EDX, low-temperature nitrogen physisorption, XPS, and EPR. The magnetic properties of the catalysts were also measured. The thermal decomposition of precursors was analyzed by TGA combined with mass-spectrometric analysis of the evolved gases. The effects of the support pore size, the nature of the active phase and its loading, as well as the sequence of component deposition on the catalyst performance in the CO2 conversion to methanol were studied. The catalysts with cerium added at the gelation stage demonstrated the best performance. The selectivity of these samples reaches values of more than 90% over a fairly ide temperature range, with the productivity reaching 480 g/kg cat·h at 300 °C.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.3390/catal13091231

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar