CuOx/CeO2 catalyst derived from metal organic framework for reverse water-gas shift reaction

Abstract

Highlights  An alternative route using a MOF as catalyst precursor has been studied  The MOF called Cu-BTC has been used as precursor  The MOF was impregnated with cerium precursor  The impregnated MOF was pyrolyzed to obtain the catalyst  With the pyrolysis method we could control the final properties of the catalysts ABSTRACT: Herein, we have studied an alternative route for preparing CuOx/CeO2 catalysts using metal organic frameworks (MOFs) as precursors. Usually, CuOx/CeO2 materials are prepared by wet impregnation of ceria support. In this study, we have impregnated a Cu-MOF with a ceria precursor and then pyrolized the impregnated MOF using different conditions and procedures. The prepared catalysts have been characterized by using a wide range of techniques such as XRD, XPS, Raman, and TPR. We have found that the pyrolysis method determines the dispersion of the oxidized copper species on the ceria surface what, in turn, controls the catalytic activity and selectivity of the catalysts in the reverse water-gas shift (RWGS) reaction. We have compared the behavior of the MOF-derived

Noble-metal-free and Pt nanoparticles-loaded, mesoporous oxides as efficient catalysts for CO2 hydrogenation and dry reforming with methane

“…Ru [27], Cu [28][29][30], Fe [31,32], and Ni [33,34] have been utilized. Various supports such as CeO 2 [28,35,36] , SiO 2 [37,38] , Al 2 O 3 [39,40] , ZrO 2 [29] , TiO 2 [25,41] , zeolite [13] have been used. In addition, methanation of CO 2 , also known as Sabatier reaction is a promising strategy for the production of methane.…”

“…The hydrogenation of CO 2 leads to the formation of a variety of products e.g., methanol (CH 3 OH), carbon monoxide (CO), methane (CH 4 ), formic acid (HCOOH) and hydrocarbons [2][3][4][5][6][7]. CO 2 hydrogenation through the reverse water-gas shift reaction produces the primary industrial C 1 building block CO which, together with H 2 , can be used to produce long-chain hydrocarbons through Fischer-Tropsch reaction [8,9].…”

Recent Advances in Supported Metal Catalysts and Oxide Catalysts for the Reverse Water-Gas Shift Reaction

“…Although the CO selectivities of these oxide catalysts are desirable in RWGSR, their disadvantages of lower CO 2 activation and feasible poisons and sintering are hindering their extended application. In order to address these issues, persistent studies have concentrated on the fabrication of composite oxides (Liu et al, 2015;Dai et al, 2018;Ronda-Lloret et al, 2018;Panarities et al, 2020), spinel oxides (i.e., ZnAl 2 O 4 , ZnCr 2 O 4 , CuAl 2 O 4 , CoAl 2 O 4 , etc.) (Joo and Jung, 2003;Bahmanpour et al, 2019Bahmanpour et al, , 2020 LaNiO 3 , La 0.9 Sr 0.1 NiO 3+δ , La 0.9 Sr 0.1 FeO 3−δ , La 0.9 Sr 0.1 Ni 0.5 Fe 0.5 O 3−δ , La 0.75 Sr 0.25 Cr 0.5 Mn 0.5 O 3−δ , SrCe 0.9 Y 0.1 O 3−δ , etc.)…”

MOF‐derived/zeolite hybrid catalyst for the production of light olefins from CO2

“…[31][32][33] Furthermore, MOFs are an interesting alternative to the use of co-precipitated bulk metal oxides due to the fact that the metal (oxide precursor) sites are atomically dispersed in a metal organic crystalline framework and thus, it should produce less agglomerated and smaller nanoparticles after thermal decomposition of the linker in the close vicinity of the zeolite. [34][35][36][37][38][39][40] Recently, some of the authors here used this concept to create Zn and Cu oxide clusters on FAU zeolites for CÀ C and CÀ N couplings during the synthesis of fine chemical intermediates. [34] Moreover, different groups have employed MOFs or MOF derived catalysts in the hydrogenation of CO into hydrocarbons (Fischer-Tropsch) and hydrogenation of CO 2 into methanol or methane.…”