Highly Efficient Ru-Based Catalysts for Lactic Acid Conversion to Alanine

被引：4

作者：

Podolean, Iunia ^{[1
]}

Dogaru, Mara ^{[1
]}

Guzo, Nicolae Cristian ^{[1
]}

Petcuta, Oana Adriana ^{[1
]}

Jacobsen, Elisabeth E. ^{[2
]}

Nicolaev, Adela ^{[3
]}

Cojocaru, Bogdan ^{[1
]}

Tudorache, Madalina ^{[1
]}

Parvulescu, Vasile I. ^{[1
]}

Coman, Simona M. ^{[1
]}

机构：

[1] Univ Bucharest, Fac Chem, Dept Inorgan Chem Organ Chem Biochem & Catalysis, 4-12 Regina Elisabeta Ave, Bucharest 030018, Romania

[2] Norwegian Univ Sci & Technol, Dept Chem, Hogskoleringen 5, N-7491 Trondheim, Norway

[3] Natl Inst Mat Phys, Atomistilor 405b, Magurele 077125, Ilfov, Romania

来源：

NANOMATERIALS | 2024年 / 14卷 / 03期

关键词：

ruthenium nanoparticles; MWCNT; beta-zeolite; magnetic nanoparticles; amination; lactic acid; alanine; AMINO-ACIDS; GC-MS; RUTHENIUM; NANOPARTICLES; ADSORPTION; MOLECULES; ZEOLITES; NITROGEN; BIOMASS;

D O I：

10.3390/nano14030277

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The primary objective of this research was to develop efficient solid catalysts that can directly convert the lactic acid (LA) obtained from lignocellulosic biomass into alanine (AL) through a reductive amination process. To achieve this, various catalysts based on ruthenium were synthesized using different carriers such as multi-walled carbon nanotubes (MWCNTs), beta-zeolite, and magnetic nanoparticles (MNPs). Among these catalysts, Ru/MNP demonstrated a remarkable yield of 74.0% for alanine at a temperature of 200 degrees C. This yield was found to be superior not only to the Ru/CNT (55.7%) and Ru/BEA (6.6%) catalysts but also to most of the previously reported catalysts. The characterization of the catalysts and their catalytic results revealed that metallic ruthenium nanoparticles, which were highly dispersed on the external surface of the magnetic carrier, significantly enhanced the catalyst's ability for dehydrogenation. Additionally, the -NH2 basic sites on the catalyst further facilitated the formation of alanine by promoting the adsorption of acidic reactants. Furthermore, the catalyst could be easily separated using an external magnetic field and exhibited the potential for multiple reuses without any significant loss in its catalytic performance. These practical advantages further enhance its appeal for applications in the reductive amination of lactic acid to alanine.

引用

页数：23

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