{"title":"混合金属氧化物青铜作为气相有氧转化甘油为丙烯酸的催化剂：单催化床或双催化床方法","authors":"","doi":"10.1016/j.cattod.2024.114965","DOIUrl":null,"url":null,"abstract":"<div><p>Metal-doped hexagonal tungsten oxide bronzes (<em>h</em>-WVO<sub>x</sub> and <em>h</em>-WNbO<sub>x</sub>) and metal-doped orthorhombic molybdenum oxide bronzes-M1 type (MoVO<sub>x</sub>, MoVTeO<sub>x</sub> and MoVTeNbO<sub>x</sub>) have been synthesized hydrothermally and heat-treated at 400, 550 or 600 °C in N<sub>2</sub>. The catalysts were characterized by several techniques and tested in the one-pot aerobic transformation of glycerol at 350 °C. From all of them, <em>h</em>-WNbO<sub>x</sub> resulted as the most selective to acrolein (80 % yield), whereas both <em>h</em>-WVO<sub>x</sub> and MoVTeNbO<sub>x</sub> were more effective to acrylic acid (with a yield lower than 25 %). Subsequently, a double-bed reactor comparative study was conducted, with <em>h</em>-WNbO<sub>x</sub> acting as the first catalytic bed. In this case, the yield to acrylic acid decreased as follows: MoVTeNbO<sub>x</sub> > MoVTeO<sub>x</sub> > MoVO<sub>x</sub> > <em>h</em>-WVO<sub>x</sub>. IR spectroscopy of acrolein adsorbed on these catalysts allows to explain the catalytic performance of these catalysts.</p></div>","PeriodicalId":264,"journal":{"name":"Catalysis Today","volume":null,"pages":null},"PeriodicalIF":5.2000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0920586124004590/pdfft?md5=e29b2fa3baea5b67ad3eccd6c4b798d3&pid=1-s2.0-S0920586124004590-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Mixed metal oxide bronzes as catalysts for the gas-phase aerobic transformation of glycerol to acrylic acid: Single or double catalytic bed approaches\",\"authors\":\"\",\"doi\":\"10.1016/j.cattod.2024.114965\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Metal-doped hexagonal tungsten oxide bronzes (<em>h</em>-WVO<sub>x</sub> and <em>h</em>-WNbO<sub>x</sub>) and metal-doped orthorhombic molybdenum oxide bronzes-M1 type (MoVO<sub>x</sub>, MoVTeO<sub>x</sub> and MoVTeNbO<sub>x</sub>) have been synthesized hydrothermally and heat-treated at 400, 550 or 600 °C in N<sub>2</sub>. The catalysts were characterized by several techniques and tested in the one-pot aerobic transformation of glycerol at 350 °C. From all of them, <em>h</em>-WNbO<sub>x</sub> resulted as the most selective to acrolein (80 % yield), whereas both <em>h</em>-WVO<sub>x</sub> and MoVTeNbO<sub>x</sub> were more effective to acrylic acid (with a yield lower than 25 %). Subsequently, a double-bed reactor comparative study was conducted, with <em>h</em>-WNbO<sub>x</sub> acting as the first catalytic bed. In this case, the yield to acrylic acid decreased as follows: MoVTeNbO<sub>x</sub> > MoVTeO<sub>x</sub> > MoVO<sub>x</sub> > <em>h</em>-WVO<sub>x</sub>. IR spectroscopy of acrolein adsorbed on these catalysts allows to explain the catalytic performance of these catalysts.</p></div>\",\"PeriodicalId\":264,\"journal\":{\"name\":\"Catalysis Today\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.2000,\"publicationDate\":\"2024-07-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0920586124004590/pdfft?md5=e29b2fa3baea5b67ad3eccd6c4b798d3&pid=1-s2.0-S0920586124004590-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Today\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0920586124004590\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Today","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0920586124004590","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Mixed metal oxide bronzes as catalysts for the gas-phase aerobic transformation of glycerol to acrylic acid: Single or double catalytic bed approaches
Metal-doped hexagonal tungsten oxide bronzes (h-WVOx and h-WNbOx) and metal-doped orthorhombic molybdenum oxide bronzes-M1 type (MoVOx, MoVTeOx and MoVTeNbOx) have been synthesized hydrothermally and heat-treated at 400, 550 or 600 °C in N2. The catalysts were characterized by several techniques and tested in the one-pot aerobic transformation of glycerol at 350 °C. From all of them, h-WNbOx resulted as the most selective to acrolein (80 % yield), whereas both h-WVOx and MoVTeNbOx were more effective to acrylic acid (with a yield lower than 25 %). Subsequently, a double-bed reactor comparative study was conducted, with h-WNbOx acting as the first catalytic bed. In this case, the yield to acrylic acid decreased as follows: MoVTeNbOx > MoVTeOx > MoVOx > h-WVOx. IR spectroscopy of acrolein adsorbed on these catalysts allows to explain the catalytic performance of these catalysts.
期刊介绍：
Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues.
Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.
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