Effect of preparation parameters on characterization and activity of Co3O4 catalyst in liquid phase oxidation of lignin model substrates

被引：50

作者：

Mate, V. R. ^{[1
]}

Jha, A. ^{[1
]}

Joshi, U. D. ^{[2
]}

Patil, K. R. ^{[3
]}

Shirai, M. ^{[4
]}

Rode, C. V. ^{[1
]}

机构：

[1] CSIR, Natl Chem Lab, Chem Engn & Proc Dev Div, Pune, Maharashtra, India

[2] Netaji Subhash Chandra Bose Coll, Nanded, India

[3] CSIR, Natl Chem Lab, Ctr Mat Characterizat, Pune, Maharashtra, India

[4] Iwate Univ, Fac Engn, Dept Chem & Bioengn, Morioka, Iwate 0208551, Japan

来源：

APPLIED CATALYSIS A-GENERAL | 2014年 / 487卷

关键词：

Nano Co3O4; Veratryl alcohol; Sinapyl alcohol; Coniferyl alcohol; TPR; AEROBIC OXIDATION; SELECTIVE SYNTHESIS; THERMAL-CONVERSION; VANILLYL ALCOHOL; GRAPHENE OXIDE; AIR OXIDATION; COMPOSITE; NANOCOMPOSITE;

D O I：

10.1016/j.apcata.2014.08.023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The nano structured spinel cobalt oxide (Co3O4) was prepared via simple co-precipitation method and its catalytic activity was evaluated for the liquid phase aerobic oxidation of lignin sub structure compounds such as veratryl alcohol. Catalyst preparation parameters influenced its morphology eventually affecting its oxidation activity. Thus, nano rod shaped CO3O4 catalyst showed 75% and 38% conversion of veratryl alcohol with complete selectivity to veratryl aldehyde in toluene and water, respectively, under base free condition. The influence of reaction conditions, such as temperature, oxygen pressure and catalyst loading was studied to obtain the optimum product yield and selectivity to the desired product. Furthermore, oxidation of various sub-structures of lignin model compounds was also studied over the same catalyst which was found to be in the following order: secondary alcohol >di-substituted > tri-substituted > monosubstituted > non-substitution. The stability of the catalyst was confirmed by its successful recycle for three times. (c) 2014 Elsevier B.V. All rights reserved.

引用

页码：130 / 138

页数：9

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