{"title":"能在强酸条件下从废钯催化剂中高效回收钯的耐酸共价有机框架","authors":"Liecheng Guo , Qingyun Zhang , Fengshan Yu , Qing Huang , Feng Luo","doi":"10.1016/j.cej.2024.150515","DOIUrl":null,"url":null,"abstract":"<div><p>Pd recovery from used sources is now receiving growing attentions, due to its scarcity and important application in many fields, however, which is still seriously restricted by the lack available adsorbent that can effectively capture palladium (Pd) from strong acid (>3 M). To this end, we report herein an acid-resisting covalent organic framework (COF), namely ECUT-COF-20, for such use. This new adsorbent is found to perform a benchmark Pd recovery performance from 6 M acidity such as the fast adsorption kinetics (1 min) and high uptake capacity (181 mg/g). The breakthrough test from a Pd/C-digested solution is used to confirm its practical application, giving an exceptionally one-round 95 % Pd recovery efficiency. The mechanism, as unveiled by characterization and DFT calculation, is due to a spatial and functional separation in this adsorbent, which could consequently not only overcome the influence of strong acid, but also provide abundant hydrogen bonds for fixing Pd ions.</p></div>","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":null,"pages":null},"PeriodicalIF":13.3000,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Acid-resisting covalent organic framework enabling high-efficiency palladium recovery from used palladium catalyst under strong acid\",\"authors\":\"Liecheng Guo , Qingyun Zhang , Fengshan Yu , Qing Huang , Feng Luo\",\"doi\":\"10.1016/j.cej.2024.150515\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Pd recovery from used sources is now receiving growing attentions, due to its scarcity and important application in many fields, however, which is still seriously restricted by the lack available adsorbent that can effectively capture palladium (Pd) from strong acid (>3 M). To this end, we report herein an acid-resisting covalent organic framework (COF), namely ECUT-COF-20, for such use. This new adsorbent is found to perform a benchmark Pd recovery performance from 6 M acidity such as the fast adsorption kinetics (1 min) and high uptake capacity (181 mg/g). The breakthrough test from a Pd/C-digested solution is used to confirm its practical application, giving an exceptionally one-round 95 % Pd recovery efficiency. The mechanism, as unveiled by characterization and DFT calculation, is due to a spatial and functional separation in this adsorbent, which could consequently not only overcome the influence of strong acid, but also provide abundant hydrogen bonds for fixing Pd ions.</p></div>\",\"PeriodicalId\":270,\"journal\":{\"name\":\"Chemical Engineering Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":13.3000,\"publicationDate\":\"2024-03-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Journal\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1385894724020023\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Journal","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1385894724020023","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Acid-resisting covalent organic framework enabling high-efficiency palladium recovery from used palladium catalyst under strong acid
Pd recovery from used sources is now receiving growing attentions, due to its scarcity and important application in many fields, however, which is still seriously restricted by the lack available adsorbent that can effectively capture palladium (Pd) from strong acid (>3 M). To this end, we report herein an acid-resisting covalent organic framework (COF), namely ECUT-COF-20, for such use. This new adsorbent is found to perform a benchmark Pd recovery performance from 6 M acidity such as the fast adsorption kinetics (1 min) and high uptake capacity (181 mg/g). The breakthrough test from a Pd/C-digested solution is used to confirm its practical application, giving an exceptionally one-round 95 % Pd recovery efficiency. The mechanism, as unveiled by characterization and DFT calculation, is due to a spatial and functional separation in this adsorbent, which could consequently not only overcome the influence of strong acid, but also provide abundant hydrogen bonds for fixing Pd ions.
期刊介绍:
The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.