Real atom economy and its application for evaluation the green degree of a process

doi:10.1007/s11705-010-1030-7

Front Chem Sci Eng

2011, Vol. 5

Issue (3) : 349-354 https://doi.org/10.1007/s11705-010-1030-7

RESEARCH ARTICLE

Real atom economy and its application for evaluation the green degree of a process

Weihan WANG, Jing Lü, Li ZHANG, Zhenhua LI(

)

Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Abstract

Green chemistry has attracted more attention in the past century. Among the 12 principles of green chemistry, only atom economy and E factor can be expressed quantitatively to depict the impact of a chemical process to environment. Atom economy was thought better than the traditional yield for evaluating the atom efficiency of raw materials. But it is not enough to reflect the conversion degree of raw material. In this paper, we proposed the concept of real atom economy (RAE) as a metric. RAE could combine the above two factors together to better express the green degree of a process. We further suggested an equation to correlate E factor with RAE. The concept of RAE is proved to be helpful for estimating an environmentally benign process.

Keywords green chemistry real atom economy E factor atom economy yield

Corresponding Author(s): LI Zhenhua,Email:zhenhua@tju.edu.cn

Issue Date: 05 September 2011

Cite this article:

Weihan WANG,Jing Lü,Li ZHANG, et al. Real atom economy and its application for evaluation the green degree of a process[J]. Front Chem Sci Eng, 2011, 5(3): 349-354.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-010-1030-7
https://academic.hep.com.cn/fcse/EN/Y2011/V5/I3/349

Fig.1 AE of ethylene epoxide production via different processes []

Fig.2 Production of MTBP from MTBE and -cresol

Tab.1 Comparison of metrics for MTBP production []

Fig.3 AE and E factor for the production of oxalic acid []

Tab.2 Waste generation in different types of industry []

Fig.4 Production of DPO from DMO

Tab.3 Reaction data of DPO production

Fig.5 Diagram for chemical production

Fig.6 An environmentally benign process for oxalate acid production

Fig.7 Different processes for the production of propylene oxide

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