Alina Aftab, Katerina L. Chagoya, Alan Felix, R. Blair, N. Orlovskaya
{"title":"Catalytic performance of porous Yb2O3 sesquioxide","authors":"Alina Aftab, Katerina L. Chagoya, Alan Felix, R. Blair, N. Orlovskaya","doi":"10.1080/17436753.2021.1919359","DOIUrl":null,"url":null,"abstract":"ABSTRACT Porous Yb2O3 ceramic (55%) was pressureless sintered at 900°C for four hours in air. The crystal structure of Yb2O3 was confirmed to be cubic ( ) with c = 10.43731 Å by neutron diffraction. The spectral vibrational signature of Yb2O3 was also confirmed by micro-Raman spectroscopy. Yb2O3 is an amphoteric oxide with both acid and base character, which presents the potential for producing different hydrocarbons when used as a Fischer–Tropsch (FT) catalyst. It was found that Yb2O3 is indeed catalytically active and can be used to convert syngas (CO + H2) into useful hydrocarbons. Production of methane, ethene, and ethane was detected in the catalytic experiment performed at 500°C, but propane, propene, butane, and methanol were also detected in the experiment performed at 250°C. Hydrocarbons heavier than C4 were not observed. The limited data show deviation from a Flory–Schulz distribution suggesting additional surface processes are occurring beyond chain growth and termination.","PeriodicalId":7224,"journal":{"name":"Advances in Applied Ceramics","volume":"42 1","pages":"175 - 186"},"PeriodicalIF":1.3000,"publicationDate":"2021-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Applied Ceramics","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/17436753.2021.1919359","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
ABSTRACT Porous Yb2O3 ceramic (55%) was pressureless sintered at 900°C for four hours in air. The crystal structure of Yb2O3 was confirmed to be cubic ( ) with c = 10.43731 Å by neutron diffraction. The spectral vibrational signature of Yb2O3 was also confirmed by micro-Raman spectroscopy. Yb2O3 is an amphoteric oxide with both acid and base character, which presents the potential for producing different hydrocarbons when used as a Fischer–Tropsch (FT) catalyst. It was found that Yb2O3 is indeed catalytically active and can be used to convert syngas (CO + H2) into useful hydrocarbons. Production of methane, ethene, and ethane was detected in the catalytic experiment performed at 500°C, but propane, propene, butane, and methanol were also detected in the experiment performed at 250°C. Hydrocarbons heavier than C4 were not observed. The limited data show deviation from a Flory–Schulz distribution suggesting additional surface processes are occurring beyond chain growth and termination.
期刊介绍:
Advances in Applied Ceramics: Structural, Functional and Bioceramics provides international coverage of high-quality research on functional ceramics, engineering ceramics and bioceramics.