|本期目录/Table of Contents|

[1]何崇慧,全民强,边虎,等.钯-铂重整催化剂中铂含量测定的干扰因素及消除方法[J].石化技术与应用,2024,2:139-143.
 HE Chong-hui,QUAN Min-qiang,BIAN Hu,et al.Interference factors and elimination method on the determination of Pt content in Pd-Pt reforming catalyst[J].Petrochemical technology & application,2024,2:139-143.
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钯-铂重整催化剂中铂含量测定的干扰因素及消除方法(PDF)

《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:
2024年2期
页码:
139-143
栏目:
出版日期:
2024-03-10

文章信息/Info

Title:
Interference factors and elimination method on the determination of Pt content in Pd-Pt reforming catalyst
文章编号:
1009-0045(2024)02-0139-05
作者:
何崇慧全民强边虎牛承祥
中国石油石油化工研究院 兰州化工研究中心,甘肃 兰州 730060
Author(s):
HE Chong-huiQUAN Min-qiangBIAN HuNIU Chen-xiang
Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China
关键词:
钯-铂重整催化剂分光光度法铂含量干扰因素12-环己二胺四乙酸氯化亚锡
Keywords:
Pd-Pt reforming catalystspectrophotometryPt contentinterference factor12-cyclohexanediamine tetraacetic acidTin(Ⅱ) chloride
分类号:
TE 624.9+2;O 652
DOI:
DOI:10.19909/j.cnki.ISSN1009-0045.2024.02.0139
文献标识码:
B
摘要:
按照NB/SH/ T 0570—2017检测标准,使用分光光度法测定了Al2O3基钯-铂重整催化剂中的铂含量,考察了络合物放置时间、氧化铝、共存元素钯等因素对铂含量测定的影响,并采取共存离子掩蔽法消除了钯的存在对铂含量测定产生的干扰。结果表明:氯铂酸锡络合物的最佳放置时间为1 h,基体氧化铝对铂元素的测定没有影响,钯的存在使得铂含量测定结果偏大;在每100 mL待测溶液中添加2.5 mL的1,2-环己二胺四乙酸(质量分数1.0%),可消除钯对铂含量测定的干扰;在优化条件下,测定HH-8及HH-9催化剂试样中铂质量分数平均值分别为0.237%,0.179%,相对标准偏差小于3%,方法检出限为0.16 mg/L,加标回收率为97.3%~101.0%。
Abstract:
Pt content in Al2O3-based Pd-Pt reforming catalyst was determined by spectrophotometer method according to the detection standard of NB/SH/ T 0570—2017,the influence of the time of complex placement, alumina and coexisting element Pd on the determination of Pt was investigated, and the interference of Pd on the determination of Pt was eliminated by coexisting ion masking method. The results showed that the best placement time of the Tin chloroplatinate complex was 1 h, the Al2O3 had no effect on the determination of Pt, and by addition of 2.5 mL of 1,2-cyclohexanediamine tetraacetic acid (1.0% by mass fraction) per 100 mL of the solution to be determined and eliminated the interference of Pd to the determination of Pt. Under the optimum conditions, the average Pt mass fraction in HH-8 and HH-9 catalyst samples was 0.237% and 0.179%, respectively. The relative standard deviation was less than 3%. The detection limit was 0.16 mg/L, and the tagged recovery rates were 97.3%-101.0%.

参考文献/References

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2024-03-10