Abstract
氟化物置换-EDTA滴定钯氧化铝催化剂中的铝量
Determination of Al Content in Pd/Al2O3 Catalyst by Fluoride Replacement-EDTA Titration
Received:March 22, 2019  
DOI:
中文关键词: 分析化学  钯氧化铝催化剂  铝含量  氟化物置换  EDTA络合滴定
英文关键词: analytical chemistry  palladium-alumina catalysts  aluminum  fluoride replacement  EDTA-titration
基金项目:
Author NameAffiliationE-mail
JIANG Shaozhuang Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China jiangshaozhuang@163.com 
JIN Yaqiu Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China  
SONG Jianqiang Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China  
FANG Wei Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China fw930@ipm.com.cn 
YANG Xiaotao Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China  
FU Shimei Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China  
LU Ruizhi Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China  
ZENG Hefeng Kunming Institute of Precious Metals, State Key Laboratory of Advanced Technologies for ComprehensiveUtilization of Platinum, Metals, Sino-Platinum Metals Co. Ltd., Kunming 650106, China  
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中文摘要:
      研究了钯氧化铝催化剂中铝含量的EDTA络合滴定法。通过对影响试样溶解、络合及滴定诸因素条件的研究,考察了溶(熔)剂种类、容器材质、滴定前处理方式等对滴定结果的影响,最终建立了高压消化罐+HCl-HF-H2O2/铂金坩埚+碳酸钠-硼砂碱熔+氟化物置换-EDTA络合滴定测定钯氧化铝催化剂中铝含量的2种方法。方法的加标回收率99.18%~100.94%,相对标准偏差优于0.5%。能够满足铝含量准确测定要求。2种方法均已用于5个钯氧化铝催化剂标准样品中铝元素的定值。
英文摘要:
      EDTA complexometric titration of aluminum content in palladium-alumina catalyst was studied. The factors affecting dissolution, complexation and titration of samples and the influences of agent types, container materials and pre-titration methods on the titration results were investigated. Two determination methods for aluminum content in palladium-alumina catalysts were established, i.e. high-pressure digestion tank+HCl-HF-H2O2/ platinum crucible+sodium carbonate borax alkali fusion-fluorochemical replacement EDTA complexometric titration. The recoveries of the methods are 99.18%~100.94%, and the relative standard deviation is less than 0.5%. It can meet the requirements of accurate determination of aluminum content. The two methods have been used for the determination of aluminum in five palladium alumina catalyst standard samples.
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