{"title":"酸处理对催化分解硝酸羟胺和硝酸肼的 Ru/AC 催化剂活性炭的影响","authors":"Baole Li, Deyan Yu, Zhi Cao, Tiansheng He, Xiwen Chen, Weifang Zheng","doi":"10.1016/j.apcata.2024.119801","DOIUrl":null,"url":null,"abstract":"<div><p>Two types of 5 %wt Ru/AC catalysts were prepared using carbon carriers treated with 5 mol L<sup>−1</sup> HNO<sub>3</sub> and 5 mol L<sup>−1</sup> HCl by the impregnation method, respectively. The catalysts were characterized by N<sub>2</sub> physical adsorption, XRD, XPS, SEM, TEM and ICP-AES. The catalytic activity and stability of the catalysts for the decomposition of hydroxylamine nitrate (HAN) and hydrazine nitrate (HN) was evaluated. The results demonstrated that both catalysts exhibited complete decomposition of HAN and HN under moderate reaction conditions (70–90 ℃), displaying similar activities. And the catalysts treated with hydrochloric acid exhibited better stability and can be reused 128 cycles. Furthermore, the experimental results on various parameters indicate that an increase in temperature and nitric acid concentration leads to a reduction in reaction time. The catalytic performance of Ru/AC catalyst remains unchanged after 20 cycles under radioactive conditions, exhibiting exceptional radiation resistance.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of acid-treatment on the activated carbon of Ru/AC catalysts for catalytic decomposition of hydroxylamine nitrate and hydrazine nitrate\",\"authors\":\"Baole Li, Deyan Yu, Zhi Cao, Tiansheng He, Xiwen Chen, Weifang Zheng\",\"doi\":\"10.1016/j.apcata.2024.119801\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Two types of 5 %wt Ru/AC catalysts were prepared using carbon carriers treated with 5 mol L<sup>−1</sup> HNO<sub>3</sub> and 5 mol L<sup>−1</sup> HCl by the impregnation method, respectively. The catalysts were characterized by N<sub>2</sub> physical adsorption, XRD, XPS, SEM, TEM and ICP-AES. The catalytic activity and stability of the catalysts for the decomposition of hydroxylamine nitrate (HAN) and hydrazine nitrate (HN) was evaluated. The results demonstrated that both catalysts exhibited complete decomposition of HAN and HN under moderate reaction conditions (70–90 ℃), displaying similar activities. And the catalysts treated with hydrochloric acid exhibited better stability and can be reused 128 cycles. Furthermore, the experimental results on various parameters indicate that an increase in temperature and nitric acid concentration leads to a reduction in reaction time. The catalytic performance of Ru/AC catalyst remains unchanged after 20 cycles under radioactive conditions, exhibiting exceptional radiation resistance.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-05-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X2400245X\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X2400245X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effect of acid-treatment on the activated carbon of Ru/AC catalysts for catalytic decomposition of hydroxylamine nitrate and hydrazine nitrate
Two types of 5 %wt Ru/AC catalysts were prepared using carbon carriers treated with 5 mol L−1 HNO3 and 5 mol L−1 HCl by the impregnation method, respectively. The catalysts were characterized by N2 physical adsorption, XRD, XPS, SEM, TEM and ICP-AES. The catalytic activity and stability of the catalysts for the decomposition of hydroxylamine nitrate (HAN) and hydrazine nitrate (HN) was evaluated. The results demonstrated that both catalysts exhibited complete decomposition of HAN and HN under moderate reaction conditions (70–90 ℃), displaying similar activities. And the catalysts treated with hydrochloric acid exhibited better stability and can be reused 128 cycles. Furthermore, the experimental results on various parameters indicate that an increase in temperature and nitric acid concentration leads to a reduction in reaction time. The catalytic performance of Ru/AC catalyst remains unchanged after 20 cycles under radioactive conditions, exhibiting exceptional radiation resistance.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.