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Review
. 2020 Mar 31:8:185.
doi: 10.3389/fchem.2020.00185. eCollection 2020.

Recent Progress in Adipic Acid Synthesis Over Heterogeneous Catalysts

Wenjuan Yan  1 , Guangyu Zhang  1 , Jinyao Wang  1 , Mengyuan Liu  1 , Yu Sun  1 , Ziqi Zhou  1 , Wenxiang Zhang  1 , Shuxia Zhang  1 , Xiaoqiang Xu  2 , Jian Shen  3 , Xin Jin  1
Affiliations
Review

Recent Progress in Adipic Acid Synthesis Over Heterogeneous Catalysts

Wenjuan Yan et al. Front Chem. .

Abstract

Adipic acid is one of the most important feedstocks for producing resins, nylons, lubricants, plasticizers. Current industrial petrochemical process, producing adipic acid from KA oil, catalyzed by nitric acid, has a serious pollution to the environment, due to the formation of waste nitrous oxide. Hence, developing cleaner methods to produce adipic acid has attracted much attention of both industry and academia. This mini-review article discussed advances on adipic acid synthesis from bio-renewable feedstocks, as well as most recent progress on cleaner technology from fossil fuels over novel catalytic materials. This work on recent advances in green adipic acid production will provide insights and guidance to further study of various other industrial processes for producing nylon precursors.

Keywords: adipic acid; cyclohexanone; glucaric acid; glucose; nanostructured catalyst; polyoxometalates.

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Figures

Graphical Abstract
Graphical Abstract
Heterogeneous Catalysts for Adipic Acid Synthesis.
Figure 1
Figure 1
(A) Glucose oxidation to produce AA, (Jin et al., 2016). (B) TEM images of PtPd/TiO2 (Jin et al., 2016).
Figure 2
Figure 2
(A) HMF to AA, (Lee et al., 2016) TEM images of (B) AuPd/CaMgAl, (Gao et al., 2017) (C) Pt-Ni/AC, (Shen et al., 2018) (D) Ru/HAP (Gao et al., 2018).
Figure 3
Figure 3
Proposed (A) Baeyer-Villiger oxidation type of mechanism, (Pisk et al., 2019) (B) radical chain autoxidation mechanism, (Cavani et al., 2011) (C) redox mechanism (Amitouche et al., 2018) of cyclohexanone oxidation to AA.
See this image and copyright information in PMC

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