AgAuPd/meso-Co3O4: High-performance catalysts for methanol oxidation

Oxidative Removal of Volatile Organic Compounds over the Supported Bimetallic Catalysts

“…Yang et al [25] prepared the AgxAuyPd/meso-Co3O4 catalysts by the polyvinyl alcohol-protected NaBH4 reduction approach, and evaluated their catalytic performance for methanol combustion. They found that 0.68 wt% Ag0.75Au1.14Pd/meso-Co3O4 showed the highest catalytic activity (T50% = 100 o C and T90% = 112 o C at a SV of 80,000 mL/(g h) (Figure 4).…”

“…Bimetallic catalysts have applications in many fields, such as electrocatalysis, photocatalysis, and even sensors. This article mainly reviews their applications in the oxidation of VOCs and 1.41Pd5.1Pt/meso-Mn2O3 2.5 vol% CH4 20,000 425 6.39 b /400 [14] PdPt@SiO2 4000 ppm CH4 133,800 420 2.353 b /420 [15] Au3Pd7/TiO2 1000 ppm CO 48,000 129 (T50%) 0.364 b /200 [16] 1.93AuPd1.95/3DOM CoCr2O4 2.5 vol% CH4 20,000 394 1.15 b /320 [17] 1.91AuPd1.80/3DOM LaMnAl11O19 2.5 vol% CH4 20,000 402 0.74 b /310 [18] 1.95Au1Pd2/meso-Cr2O3 1000 ppm toluene 20,000 165 0.091 b /120 [21] 0 0.264 b /187 [22] Au1Pd2/CZY 1000 ppm toluene 20,000 218 47.8 a /220 [23] Au-Pd-0.21Co/3DOM Mn2O3 2.5 vol% CH4 40,000 213 6.269 b /213 [24] 0.68Ag0.75Au1.14Pd/meso-Co3O4 1000 ppm toluene 80,000 112 0.633 b /112 [25] 1AuPd/3DOM LSMO 2.5 vol% CH4 40,000 335 3.63 b /270 [27] PtxAg1-x/HZ-S 120 ppm benzene 30,000 115 0.028 b /115 [28] 3.8AuPd1.92/3DOM Mn2O3 1000 ppm toluene 40,000 162 10.5 a /162 [32] 1.99AuPd/3DOM Co3O4 1000 ppm toluene 40,000 168 21.43 a /170 [33] 2.85AuPd1.87/3DOM CeO2 750 ppm trichloroethylene 20,000 415 11.8 a /300 [34] 2.05Au/0.70FeOx/CeO2 1400 ppm toluene 32,000 300 45.9 b /300 [35] 1.00Au/6CoO/SiO2-2 1.0 vol% CO 12,000 167 12.1 a /187 [36] 1.21Au−8.50Co-10/UVM-7 1000 ppm propane 20,000 320 − [34] AuCo-10/UVM-7 1000 ppm toluene 20,000 275 12.3 a /275 [37] 5.10Au/MnOx/Al2O3 0.5 vol% methane 30,000 580 39.6 a /580 [38] 0.93Au/11.2MnOx/3DOM SiO2 1000 ppm toluene 20,000 255 9.5 a /255 [39] 1.67Mn3O4−2.00Au/3DOM LSCO 1000 ppm toluene 20,000 230 20.5 a /230 [40] 1.00Pd@CeO2/Si−Al2O3 0.5 vol% methane 20,000 390 66.7 a /320 [41] 1.00Pd@ZrO2/Si−Al2O3 1.0 vol% methane 18,000 400 120.1 a /320 [42] 0.50Pd−Co/ Al2O3 0.4 vol% methane 50,000 520 128.7 a /430 [43] 0.20Pd/Co−Ce (6 : 1)/Al2O3 1000 ppm benzene 20,000 185 86.6 a /140 [44] 0.26Pd@CoOx/3DOM CeO2 2.5 vol% methane 40,000 480 1334.3 a /440 [45] 1.37Pd−GaOx/Al2O3 0.5 vol% methane 80,000 372 23.32 a /290 [46] 1.10Pd/Al2O3−36NiO 1.0 vol% methane 48,000 460 126.1 a /310…”

“…Figure 4: (A) Methanol conversion and (B) reaction rate normalized per gram of noble metal versus temperature over (a) 0.28Ag/meso-Co3O4, (b) 0.35Au/meso-Co3O4, (c) 0.33Pd/meso-Co3O4, (d) 0.68Ag0.75Au1.14Pd/meso-Co3O4, (e) 0.84Ag0.54Au2.29Pd/meso-Co3O4, and (f) 0.93Ag0.51Au0.65Pd/meso-Co3O4[25].…”

New strategy of S,N co-doping of conductive-copolymer-derived carbon nanotubes to effectively improve the dispersion of PtCu nanocrystals for boosting the electrocatalytic oxidation of methanol

“…To date, various strategies have been exploited to address the above issues. For example, studies have focused on carbon nanomaterial supports (e.g., carbon nanotubes or graphene) [4][5][6], alloying with other transition metals [7,8], metal oxide/carbide/sulfide co-catalysts [9][10][11], and controlling the morphology of the catalytic particles [12,13]. In particular, the performance of Pt-based catalysts mainly depends on the properties of the support and the interactions between catalytic particles and support.…”

Site-specific deposition creates electron-rich Pd atoms for unprecedented C−H activation in aerobic alcohol oxidation

“…The key to solve this problem lies in the successful development of efficient catalysts and the comprehensive understanding of the reaction mechanism. Among the various transition metals, Pd has long been recognized as an efficient component to activate C-H bonds in alkanes [6][7][8], alcohols [9][10][11][12][13][14], and aromatic compounds [3,15,16]. During the last few years, several efficient Pd catalysts including single-site Pd catalysts [17] and Pd-based bimetallic nanocatalysts [18][19][20][21][22] have been developed to maximize the utilization of Pd.…”