Measurement of the solubility for CO 2 in alcohols and its correlation with the molecular connectivity index - Details

author：

Li, T.-Z. (Li, T.-Z..) ^[1] | Tang, Z.-G. (Tang, Z.-G..) ^[2] | Hu, H. (Hu, H..) ^[3] | Guo, D. (Guo, D..) ^[4]

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Abstract：

The　solubility　of　CO　2　in　ethanol,　propanol,　isopropanol,　butanol,　amyl　alcohol,　isoamyl　alcohol,　hexanol,　octanol,　ethylene　glycol　and　1,　2-propanediol　were　experimentally　determined　by　the　constant　volume　method　at　303.15　K.　The　results　show　that　the　solubility　of　CO　2　in　above　solvents　increase　with　increasing　the　carbon-chain　length　in　the　alcohols,　and　the　solubility　of　CO　2　in　octanol　is　the　largest.　It　was　found　that　the　Henry＇s　law　constant　of　CO　2　in　diolis　is　significantly　greater　than　that　in　monohydric　alcohol.　Using　the　linear　correlation　method,　the　Henry＇s　law　constant　was　correlated　with　MCI　(Molecular　Connectivity　Index)　and　the　correlated　model　could　predict　the　Henry＇s　law　constant　and　the　solubility　of　CO　2　in　alcohols　well　with　the　relative　coefficient　R>0.99.　The　study　also　shows　that　using　the　first　order　MCI　1χ　v　combined　with　the　number　of　hydroxyl　N　and　empirical　parameters　C　OH　could　satisfactorily　predict　the　solubility　of　CO　2　in　alcohols　mentioned　above　with　very　high　accuracy.

Keyword：

Alcohol; CO 2capture; Molecular connectivity index(MCI); Solubility

Community：

[ 1 ] [Li, T.-Z.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
[ 2 ] [Li, T.-Z.]State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
[ 3 ] [Tang, Z.-G.]State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
[ 4 ] [Hu, H.]College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China
[ 5 ] [Guo, D.]State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Reprint 's Address：

[Tang, Z.-G.]State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Email：

zhg-tang@mail.tsinghua.edu.cn

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Source ：

Journal of Chemical Engineering of Chinese Universities

ISSN： 1003-9015

Year： 2012

Issue： 1

Volume： 26

Page： 1-6

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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