碘量法测定硼氢根浓度及主要影响因素

doi:10.11962/1006-4990.2019-0440

Abstract

Abstract:

Iodometry was proposed to determine BH₄^- concentration in the solution corresponding to the difficulties in precision detection of sodium borohydride during its industrial applications.Orthogonal testes were carried out to optimize the titration parameters,and the optimal conditions were obtained as follows: solution acidity was 0.06 mol/L,KI addition amount was three times theoretical value,water-sealing holding time was 5~10 min and indicator amount was 2 mL.Significances of varied influencing factors were in descending order: solution acidity,indicator addition amount,KI addition amount and water-sealing holding time.Optimization experiment was conducted under optimal conditions,and the results showed that the recovery rates were nearly 100% and the relative standard deviations were approximately 0.3% during the titration process.

Key words: sodium borohydride, iodometry, titration, analysis

CLC Number:

TQ128.2

Wu Bing. Determination of BH₄^- concentration by iodometry and main influencing factors[J]. Inorganic Chemicals Industry, 2020, 52(7): 77-81.

Figures/Tables 8

References 20

[1]	刘宇宏, 黄科林, 李克贤, 等. 硼氢化钠的性能与应用[J]. 企业科技与发展, 2009(24):20-23.
[2]	白银娟, 路军, 马怀让. 硼氢化钠在有机合成中的研究进展[J]. 应用化学, 2002,19(5):409-415.
[3]	车荣睿. 硼氢化钠及其在化学化工上的应用[J]. 广东化工, 1983(3):19-26.
[4]	李红斌, 房桂干. 麦草APMP浆高白度漂白的研究Ⅱ—硼氢化钠的应用[J]. 中华纸业, 2008,29(24):44-47.
[5]	闫雷, 于秀娟, 李淑琴, 等. 硼氢化钠还原法处理化学镀镍废液[J]. 化工环保, 2002,22(4):213-216.
[6]	Kojima Y, Suzuki K, Fukumoto K, et al. Hydrogen generation using sodium borohydride solution and metal catalyst coated on metal oxide[J]. Int.J.Hydrogen Energy, 2002,27(10):1029-1034.
[7]	Wang F C, Fang W H. The development of a PEMFC hybrid power electric vehicle with automatic sodium borohydride hydrogen generation[J]. Int.J.Hydrogen Energy, 2017,42(15):10376-10389.
[8]	Nunes H X, Ferreira M J F, Rangel C X, et al. Hydrogen generation and storage by aqueous sodium borohydride(NaBH₄) hydrolysis for small portable fuel cells(H₂-PEMFC)[J]. Int.J.Hydrogen Energy, 2016,41(34):15426-15432.
[9]	Yi L, Wei W, Zhao C, et al. Electrochemical oxidation of sodium borohydride on carbon supported Pt-Zn nanoparticle bimetallic catalyst and its implications to direct borohydride-hydrogen peroxide fuel cell[J]. Electrochim.Acta, 2015,158:209-218. doi: 10.1016/j.electacta.2015.01.111
[10]	Hjelm R M E, Garsany Y, Atkinson R W, et al. Sodium borohydride oxidation on Pt and/or Pd-based electrodes in hydrogen peroxide direct borohydride fuel cells(H₂O₂-DBFCs)[J]. ECS Trans., 2017,80(8):1033-1042.
[11]	Mirkin M V, Bard A J. Voltammetric method for the determination of borohydride concentration in alkaline aqueous solutions[J]. Anal.Chem., 1991,63(5):532-533.
[12]	Amendola S, Onnerud P, Kelly M T, et al. Inexpensive,in-situ monitoring of borohydride concentrations[J]. Talanta, 1999,49(2):267-270. doi: 10.1016/s0039-9140(98)00387-7 pmid: 18967596
[13]	尤铁学. 碘量法标定二氧化硫和甲醛标准贮备溶液的改进[J]. 化学试剂, 2008,30(6):447-448.
[14]	江志琴, 贵一夫, 罗郑琼, 等. 短碘量法连续测定铜精矿中铜、铁方法改进[J]. 铜业工程, 2019(1):121-124.
[15]	庞文林. 氨水二次分离-碘量法测定铜锡钛合金中的铜含量[J]. 矿冶工程, 2018,38(5):119-121.
[16]	胡永玫. 碘量法测定掺锑二氧化锡粉中锡[J]. 冶金分析, 2018,38(11):66-70.
[17]	刘毅敏, 覃军, 王祥智, 等. 硼氢化钠样品纯度的测定[J]. 理化检验-化学分册, 2003,39(9):555-556.
[18]	Gyenge E L, Oloman C W. Electrosynjournal attempts of tetrahydridoborates[J]. J.Appl.Electrochem., 1998,28(10):1147-1151.
[19]	邢书才, 杨永, 岳亚萍, 等. 碘量法滴定分析中影响分析质量因素的研究[J]. 中国测试, 2018,44(9):44-50.
[20]	Buleon A, Colonna P, Planchot V, et al. Starch granules:structure and biosynjournal[J]. Int.J.Biol.Macromol., 1998,23(2):85-112.

编号	V/mL	n_KI/mol	时间/min	V_指示剂/mL
1	4.00	0.100	0	0.50
2	6.50	0.200	5	2.00
3	9.50	0.300	10	4.00
4	14.50	0.400	15	8.00

编号	V/mL	n_KI/mol	时间/min	V_指示剂/mL	回收率/%	标准差/%
1	4.00	0.100	0	0.50	100.68	0.675
2	4.00	0.200	5	2.00	100.58	0.583
3	4.00	0.300	10	4.00	101.02	1.02
4	4.00	0.400	15	8.00	100.99	0.99
5	6.50	0.100	5	4.00	101.40	1.40
6	6.50	0.200	0	8.00	101.48	1.48
7	6.50	0.300	15	0.50	100.58	0.584
8	6.50	0.400	10	2.00	98.83	1.17
9	9.50	0.100	10	8.00	96.31	3.69
10	9.50	0.200	15	4.00	95.49	4.51
11	9.50	0.300	0	2.00	95.12	4.88
12	9.50	0.400	5	0.50	94.63	5.37
13	14.50	0.100	15	2.00	97.68	2.32
14	14.50	0.200	10	0.50	98.37	1.63
15	14.50	0.300	5	8.00	100.16	0.157
16	14.50	0.400	0	4.00	102.78	2.78

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Inorganic Acid-Base-Salt Committee of CIESC

Determination of BH₄^- concentration by iodometry and main influencing factors

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