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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 28, Number 3
JKCSEZ 28(3)
June 20, 1984 

 
Title
Liquid Phase Adsorption Properties of Organo Surfur Compounds on Cation Exchanged Natural Zeolites

양이온 교환한 천연 제올라이트에 의한 유기황화합물의 액상흡착 특성
Author
Jong-Taik Kim, Nam-Ho Heo

김종택, 허남호
Keywords
Abstract
양이온 교환한 천연제올라이트에 의한 유기황화합물의 액상흡착특성을 고찰하였다. 평형흡착량은 천연제올라이트의 교환한 양이온과 흡착질인 유기황화합물의 구조에 영향을 받고 있음을 알 수 있었다. 또한 평형흡착량은 메르캅탄(mercaptane), 설파이드(sulfide), 치오펜(thiopen) 순으로 감소하였으며, 치오펜 유도체의 경우는 π 전자가 많아짐에 따라 흡착능은 교환 이온의 polarizing power에 비례하였다. 흡착속도로부터 유기황화합물의 흡착은 pore 내의 확산이 율속단계임을 알수 있었고, 수분과 같은 작은 흡착질은 micro pore에 흡착이 일어나는 반면, 유기황화합물은 transitional-pore에 흡착이 일어났다.

The adsorption properties of organo sulfur compounds on cation exchanged natural zeolites from n-heptane were investigated. The equilibrium adsorbed amounts were dependent upon the exchanged cation and the nature of organo sulfur compounds such as length, volume, electronical structure. The increasing orders of equilibrium adsorbed amounts were thiophene derivatives, disulfide, sulfide mercaptane and thiophene, benzothiaphene, dibenzothiophene. And Co+2-zeolite was the most prominent adsorbant. Rate determining step of the adsorption at initial stage was intraparticle diffusion into the transitional pores of zeolite. These adsorption rates were dependent upon the bulkiness of adsorbate. Finally, preadsorbed water didn't affect these adsorption until the cation exchanged natural zeolite contained 2.26×10-3 mol/g of water. It indicated that water preferentially occupied the micro pores of the cation exchanged natural zeolites.

Page
194 - 202
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