Bimetallic AuCu nanoparticles supported on CeO2 as selective catalysts for glycerol conversion to lactic acid in aqueous basic medium

A review of the catalytic conversion of glycerol to lactic acid in the presence of aqueous base

“…Au/LPrO had the smallest gold(0) particle size of around 3.3 nm. The Au/LPrO catalyst exhibited lower glycerol conversion with LA selectivity as compared to the metal oxide-supported gold(0) nanoparticles Au/CeO 2 tested by Palacio et al 35 for glycerol conversion to LA over 8 h at 220 C. In comparison with Au/CeO 2 (ref. 50) tested at 90 C, Au/LPrO showed much higher glycerol conversion and similar LA selectivity.…”

Catalytic wet peroxide degradation of acrylonitrile wastewater by ordered mesoporous Ag/CeO2: synthesis, performance and kinetics

“…CeO 2 is a metal oxide with Lewis acid and base sites, which is a typical acid–base catalyst. 13 In the past two decades, many nanocomposites containing CeO 2 have been prepared, it can be divided into the following categories, metal/CeO 2 , metal oxide/CeO 2 , CeO 2 /support, such as Co/CeO 2 , 14 Ni/CeO 2 , 15 AuCu/CeO 2 , 16 MnO 2 /CeO 2 , 17 CuO/CeO 2 , 18 CeO 2 /SiO 2 , 19 CeO 2 /g-C 3 N 4 , 20 CeO 2 /Al 2 O 3 , 21 Ni–La 2 O 3 –CeO 2 /SBA-15, 22 Ni–CeO 2 /graphene, 23 and so on. Metal or metal oxide supported on CeO 2 carrier by impregnation method, or doped in the lattice of CeO 2 in the form of metal cation to form metal–Ce solid solution, which can improve the catalytic performance of the catalyst.…”

Combined dehydrogenation of glycerol with catalytic transfer hydrogenation of H2 acceptors to chemicals: Opportunities and challenges

“…Currently, a series of homogeneous or solid metal catalysts, including Ir- ( Sharninghausen et al, 2014 ; Lu et al, 2016 ; Finn et al, 2018 ), Pt- ( Jin et al, 2013 ; Ftouni et al, 2015 ; Oberhauser et al, 2016 ; Tang et al, 2019b ; Zhang et al, 2019 ), Pd- ( Marques et al, 2015 ; Shen et al, 2019 ), Ru ( Deng et al, 2021 ), Au- ( Shen et al, 2017a ; Palacio et al, 2019 ), Cu- ( Roy et al, 2011 ; Moreira et al, 2016 ; Yang et al, 2016 ; Yin et al, 2016 ; Shen et al, 2017b ; Li et al, 2017 ; Yin et al, 2017 ; Palacio et al, 2018a ), Ni- ( Qiu et al, 2018 ; Yin et al, 2018 ; Abdullah et al, 2020 ; Tang et al, 2020 ; Xiu et al, 2020 ), and Co-based ( Palacio et al, 2018b ) systems, have been developed to promote the rate-determining step under relatively mild reaction conditions (lower reaction temperature and alkali concentration). For example, our previous report ( Zhang et al, 2019 ) indicates that Pt–Co bimetallic catalysts significantly enhance the rate of C–H and O–H bond cleavage, showing a good dehydrogenation activation for glycerol transformation at 200°C (glycerol conversion: 85%, LA selectivity: 88%).…”