Light-driven efficient dry reforming of methane over Pt/La₂O₃ with long-term durability

Abstract

The instability caused by coking and catalyst sintering during dry reforming of methane (DRM) is a major obstacle to their commercialization. Herein, Pt/La2O3 exhibits high yield of syngas and satisfactory...

Deactivation Mechanism and Anti-Deactivation Measures of Metal Catalyst in the Dry Reforming of Methane: A Review

“…Thus, the thermocatalytically active center of Pt and the photocatalytically active center of TiO 2 together enhance the DRM process. Gao et al [131] utilized photocatalytic/photothermal catalytic coupling for light-driven and efficient DRM reactions and designed a Pt/La 2 O 3 catalyst capable of absorbing full-wavelength sunlight. Under light irradiation, the local surface plasmon resonance on Pt/La 2 O 3 excites more hot electrons and oxygen vacancies and triggers an increase in the surface temperature of the catalyst, promoting the dissociative conversion of CH 4 to CHx and H + , which are further converted to C* and H 2 .…”

Extraordinary Catalytic Performance of Nickel Half‐Metal Clusters for Light‐Driven Dry Reforming of Methane

“…Another is the lack of durable catalysts due to catalyst deactivation by severe coking, [14,15] which originates from thermodynamically inevitable side-reactions of CH 4 pyrolysis and CO disproportionation. [12,13] Recently, an approach of light-driven catalytic (photothermocatalytic) CO 2 reduction with CH 4 , [2][3][4][5][6][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] H 2 O, [47][48][49][50][51][52] and H 2 [53][54][55][56][57][58][59][60][61] using inexhaustible solar energy has been developed. It is very promising as it well integrates the low energy consumption of photocatalysis with the high catalytic efficiency of thermocatalysis.…”

“…Among the photothermocatalytic CO 2 reduction approach, photothermocatalytic DRM is very promising as high production rates of syngas and light-to-chemical energy conversion are simultaneously achieved. [2][3][4][5][6][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] Intensive studies have identified metallic Ni-based catalysts as the most promising candidate for both conventional thermocatalytic and lightdriven catalytic DRM owing to their earth-abundance, inexpensiveness, and high initial activity comparable to precious metal catalysts. [9][10][11][12][13][14][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]…”

A novel strategy for dramatically improving catalytic performance for light-driven thermocatalytic CO2 reduction with CH4 on Ru/MgO: the CO2 molecular fencing effect promoted by photoactivation

“…have been reported to possess better resistance to coking than non-precious group VIII metal catalysts, but coking is still inevitable. 21–27,42–44 Secondly, so far, high r and η have been achieved only with high solar light intensities (more than 192 kW m −2 ); 18–20,45–47 thus, an expensive solar concentrated system such as solar thermal power generation is necessary. In recent years, scientists have suppressed carbon buildup and improved catalytic activity by preparing multi-component alloy catalysts, catalysts with reactive oxygen species, and ion-doped catalysts; however, carbon buildup is still unavoidable and the light intensity used is high ( e.g.…”