“干浓硫酸”的制备与性质研究

doi:10.13218/j.cnki.csdc.2017.05.002

日用化学工业 ›› 2017, Vol. 47 ›› Issue (5): 246-250.doi: 10.13218/j.cnki.csdc.2017.05.002

“干浓硫酸”的制备与性质研究

侯屹婷, 关茹群, 郝雅娟, 杨恒权

山西大学,山西太原 030006

收稿日期:2017-01-25 发布日期:2019-03-20
通讯作者: 杨恒权,教授,电话:13643472170,E-mail:hqyang@sxu.edu.cn。
作者简介:侯屹婷(1990-),女,山西原平人,硕士研究生,电话:15735172021,E-mail:yitinghou90@163.com。
基金资助:
国家自然科学基金资助项目(21573136);国家自然基金委-山西联合基金资助项目(U1510105)

Preparation and property of “dry concentrated sulfuric acid”

HOU Yi-ting, GUAN Ru-qun, HAO Ya-juan, YANG Heng-quan

Shanxi University,Taiyuan,Shanxi 030006,China

Received:2017-01-25 Published:2019-03-20

摘要/Abstract

摘要： 用十三氟辛基三甲氧基硅烷对SiO₂纳米球(SN)表面进行功能化修饰,制得了耐腐蚀的超疏水SiO₂纳米球(SN-F)。将SN-F与90%浓硫酸在高速搅拌下混合,成功地制备了“干浓硫酸”,即空气包浓硫酸反相气泡。探讨了SN-F用量对形成“干浓硫酸”的影响,当SN-F的用量为浓硫酸质量的5%时,“干浓硫酸”为粒径100～200 μm间均匀的球体。通过此方法制得的“干浓硫酸”形貌均匀、比表面积大,具有一定的机械强度,且其形貌及性质在18个月后没有改变,为浓硫酸的安全运输、储存、化学反应等应用提供了新的机会。

关键词: 气/液界面, 界面吸附, 浓硫酸, 包裹, 超疏水纳米二氧化硅

Abstract: Functional modification of surface of SiO₂ nanoparticles (SN) with 1H,1H,2H,2H-perfluoro-octanetrimethoxysilane was conducted,and corrosion resisting super hydrophobic SiO₂ nanoparticles (SiN-F) were prepared.Then “dry concentrated sulfuric acid”,which is sulfuric acid encapsulated in air inverse phase bubbles was prepared by mixing SN-F and 90% concentrated sulfuric acid under high speed stirring.The effect of the dosage of SN-F on formation of “dry concentrated sulfuric acid” was examined.Result shows that when the dosage of SN-F is 5% of the mass of concentrated sulfuric acid,morphology of the “dry concentrated sulfuric acid” is uniform spherical with particle size of 100-200 μm.The prepared “dry concentrated sulfuric acid” displays high specific surface area and certain mechanical strength.After 18 months,its morphology and properties remain unchanged.The method provides new opportunities for safety in transportation,storage and chemical reaction operations in industrial applications of concentrated sulfuric acid.

Key words: gas-liquid interface, interfacial adsorption, concentrated sulfuric acid, encapsulate, super hydrophobic silica

中图分类号:

O648.2+4

侯屹婷, 关茹群, 郝雅娟, 杨恒权. “干浓硫酸”的制备与性质研究[J]. 日用化学工业, 2017, 47(5): 246-250.

HOU Yi-ting, GUAN Ru-qun, HAO Ya-juan, YANG Heng-quan. Preparation and property of “dry concentrated sulfuric acid”[J]. China Surfactant Detergent & Cosmetics, 2017, 47(5): 246-250.

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“干浓硫酸”的制备与性质研究

Preparation and property of “dry concentrated sulfuric acid”

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