{"title":"制备支撑催化剂过程中铂前驱体转化的 SAXS 研究","authors":"Yu. V. Larichev","doi":"10.1134/S0023158424601621","DOIUrl":null,"url":null,"abstract":"<p>The process of transformation of the size and shape of platinum precursor particles at all stages of the preparation of supported Pt catalysts from precursor solutions to supported metal particles was studied using small-angle X-ray scattering (SAXS). It has been established that primary Pt-containing particles of different shapes and sizes can be obtained on the surface of supports depending on the acid–base properties of the supports and the presence of a stabilizer in the precursor solution. It has been shown that the size and shape of the primary precursor particles are decisive for the dispersion of supported platinum catalysts during their further preparation.</p>","PeriodicalId":682,"journal":{"name":"Kinetics and Catalysis","volume":"65 5","pages":"536 - 546"},"PeriodicalIF":1.3000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"SAXS Study of Pt Precursor Transformations during the Preparation of Supported Catalysts\",\"authors\":\"Yu. V. Larichev\",\"doi\":\"10.1134/S0023158424601621\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The process of transformation of the size and shape of platinum precursor particles at all stages of the preparation of supported Pt catalysts from precursor solutions to supported metal particles was studied using small-angle X-ray scattering (SAXS). It has been established that primary Pt-containing particles of different shapes and sizes can be obtained on the surface of supports depending on the acid–base properties of the supports and the presence of a stabilizer in the precursor solution. It has been shown that the size and shape of the primary precursor particles are decisive for the dispersion of supported platinum catalysts during their further preparation.</p>\",\"PeriodicalId\":682,\"journal\":{\"name\":\"Kinetics and Catalysis\",\"volume\":\"65 5\",\"pages\":\"536 - 546\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-11-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Kinetics and Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0023158424601621\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kinetics and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0023158424601621","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
使用小角 X 射线散射法（SAXS）研究了从前驱体溶液到支撑金属颗粒的支撑铂催化剂制备过程中各个阶段铂前驱体颗粒大小和形状的变化过程。结果表明，根据载体的酸碱特性以及前驱体溶液中是否存在稳定剂，可以在载体表面获得不同形状和大小的原生含铂颗粒。研究表明，原生前驱体颗粒的大小和形状对进一步制备支撑铂催化剂时的分散起着决定性作用。
SAXS Study of Pt Precursor Transformations during the Preparation of Supported Catalysts
The process of transformation of the size and shape of platinum precursor particles at all stages of the preparation of supported Pt catalysts from precursor solutions to supported metal particles was studied using small-angle X-ray scattering (SAXS). It has been established that primary Pt-containing particles of different shapes and sizes can be obtained on the surface of supports depending on the acid–base properties of the supports and the presence of a stabilizer in the precursor solution. It has been shown that the size and shape of the primary precursor particles are decisive for the dispersion of supported platinum catalysts during their further preparation.
期刊介绍：
Kinetics and Catalysis Russian is a periodical that publishes theoretical and experimental works on homogeneous and heterogeneous kinetics and catalysis. Other topics include the mechanism and kinetics of noncatalytic processes in gaseous, liquid, and solid phases, quantum chemical calculations in kinetics and catalysis, methods of studying catalytic processes and catalysts, the chemistry of catalysts and adsorbent surfaces, the structure and physicochemical properties of catalysts, preparation and poisoning of catalysts, macrokinetics, and computer simulations in catalysis. The journal also publishes review articles on contemporary problems in kinetics and catalysis. The journal welcomes manuscripts from all countries in the English or Russian language.
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