From woody biomass extractives to health-promoting substances: Selective oxidation of the lignan hydroxymatairesinol to oxomatairesinol over Au, Pd, and Au-Pd heterogeneous catalysts

被引：20

作者：

Simakova, Olga A. ^{[1
,2
]}

Smolentseva, Elena ^{[3
]}

Estrada, Miguel ^{[4
]}

Murzina, Elena V. ^{[1
]}

Beloshapkin, Sergey ^{[5
]}

Willfor, Stefan M. ^{[6
]}

Simakov, Andrey V. ^{[3
]}

Murzin, Dmitry Yu. ^{[1
]}

机构：

[1] Abo Akad Univ, Proc Chem Ctr, Lab Ind Chem & React Engn, FI-20500 Turku, Finland

[2] Grad Sch Chem Engn, Turku, Finland

[3] Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Ensenada 22860, Baja California, Mexico

[4] Ctr Invest Cientif Educ Super Ensenada, Posgrado Fis Mat, Ensenada, Baja California, Mexico

[5] Univ Limerick, Mat & Surface Sci Inst, Limerick, Ireland

[6] Abo Akad Univ, Proc Chem Ctr, Lab Wood & Paper Chem, FI-20500 Turku, Finland

来源：

JOURNAL OF CATALYSIS | 2012年 / 291卷

关键词：

Gold; Palladium; Sol-gel; Selective oxidation; Biomass; Lignans; Oxomatairesinol (oxoMAT); Hydroxymatairesinol (HMR); GOLD CATALYSTS; PALLADIUM; CO; NANOPARTICLES; ZEOLITES; DEHYDROGENATION; TRANSFORMATION; TEMPERATURE; PARTICLES; BEHAVIOR;

D O I：

10.1016/j.jcat.2012.04.012

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：

Aerobic selective oxidation of the naturally occurring lignan hydroxymatairesinol (HMR) to another lignan oxomatairesinol (oxoMAT) was carried out at 70 degrees C and atmospheric pressure over different gold and gold-palladium catalysts. Several groups of gold catalysts were prepared: Au ion-exchanged on Y-zeolites promoted by Cu, Ni, Fe; Au and Au-Pd supported via deposition-precipitation with urea - DPU on metal oxides (magnesia, alumina, ceria, zirconia, and lanthanum oxide); and Au on alumina, and alumina-ceria-zirconia mixed oxides prepared by the sol-gel method. The catalysts were characterized by ICP-AES, TEM, XPS and UV-Vis techniques. Acidity of supports was studied by an FTIR method using pyridine as a probe molecule. No catalytic activity was detected in case of gold catalysts based on zeolites. Au and Au-Pd catalysts supported on metal oxides showed different activity and selectivity in the HMR transformation depending on the support acidity/basicity and the active phase. The highest activity was reached over Au supported on alumina with big transport pores displaying 100% selectivity to oxoMAT. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：95 / 103

页数：9