Effect of microwave calcination on catalytic properties of Pt/MgAl(Sn)Ox catalyst in cyclohexane dehydrogenation to cyclohexene

Wang, Nai-liang; Qiu, Jian-e; Wu, Zhaowei; Wu, Jian Ye; You, Kuiyi; Luo, He’an

doi:10.1016/j.apcata.2015.07.009

Cited by 17 publications

(3 citation statements)

References 51 publications

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“…不过, 也有制备的ZnAl 2 O 4 比表面积达到 110 m 2 /g左右的报道 [54] . [58,59] . 此外, 将SiO 2 [37] 、TiO 2 [60] 、活性炭 [61] 、金属磷酸盐氮氧化物 [62] 和Ga 2 O 3 [63] 作为Pt脱氢催化剂载体, 存在着活性、稳定性、可再生性或成本等不同的问题.…”

Section: 烷烃C-h键的选择性活化与反应机理unclassified

Gas-solid catalytic dehydrogenation of propane and butanes to olefins

Wang

2018

Sci. Sin.-Chim

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Random characteristics of the heterogeneous structure in gas-solid fluidization Science in China Series B-Chemistry 41, 377 (1998); Transitional phenomenon of particle dispersion in gas-solid two-phase flows Chinese Science Bulletin 52, 408 (2007); LBE-DEM coupled simulation of gas-solid two-phase cross jets SCIENCE CHINA Technological Sciences 56, 1377 (2013); LBE-DEM simulation of inter-phase heat transfer in gas-solid cross jets

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Section: 烷烃C-h键的选择性活化与反应机理unclassified

Gas-solid catalytic dehydrogenation of propane and butanes to olefins

Wang

2018

Sci. Sin.-Chim

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“…However, the general method to improve the activity of single Pt catalysts in the dehydrogenation process of homogeneous LOHC is to prepare bimetallic catalysts by combining Pt with Rh, Ir, W, Re, Sn, Ni, Cu, Mo, Mn, etc. ,,− The main functions of these additives are classified from three aspects: the addition of new function and geometric and electronic effect. For example, in the screening study of cyclohexane dehydrogenation over Al 2 O 3 -supported Pt bimetallic catalyst, the addition of Rh, Ir, and Re enhanced the activity of bare Pt(111) .…”

Section: Introductionmentioning

confidence: 99%

Crystal Facet Structure Dependence and Promising Pd–Pt Catalytic Materials for Perhydroacenaphthene Dehydrogenation

Wang,

Liu

2023

ACS Appl. Mater. Interfaces

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Designing an effective Pd−Pt catalytic material with excellent catalytic performance for perhydroacenaphthene (PHAN) dehydrogenation is a great challenge. In this work, in order to explore the crystal facet structure over the bimetallic Pd−Pt catalyst on the dehydrogenation performance of PHAN, the surface compositions of two kinds of Pd (Pt) atoms with different coverage on Pd modulated Pt (PdPt) and Pt modulated Pd (PtPd) catalysts were designed and studied by means of density functional theory (DFT). Through the investigation of the reaction path of PHAN dehydrogenation on Pd ML Pt(111) and Pt ML Pd(111) surfaces, it was found that Pd ML Pt(111) was advantageous to PHAN dehydrogenation (E a = 2.317 eV). This was attributed to a lower energy barrier, more stable dehydrogenation products, and the fact that Pd doping brought Pt(111) close to the Fermi level. Apparently, Pd modulated Pt catalyst has a broad application prospect in the dehydrogenation of PHAN. In the process of optimizing the PdPt morphology, a method for selecting the minimum active unit of PdPt catalysts with different ratios was proposed, that is, the most stable active unit: rhombus structure was determined according to the surface formation energy. Moreover, we correlated the relationship among the number of H atoms removed, adsorption energy, surface charge, activation energy, reaction energy, and surface coverage, and obtained the important parameters to predict the performance of PdPt catalyst in PHAN dehydrogenation system: surface charge and d-band center. Finally, the essential correlativity among Pd−Pt surface characteristics, catalytic PHAN activity, and adsorption energy was constructed; that is, the relationship model among d-band center, H atom, and product C 12 H 8 adsorption energy was established. This work opens a new simultaneous path to improve the catalytic performance of Pd−Pt-based catalytic materials for PHAN dehydrogenation, which can be achieved by regulating the rhombic active units of Pt modulated by Pd.

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“…3B. The low temperature desorption peaks were assigned to hydrogen on Pt species, 41 and there was no such signal for WO 3 . From Pt–WO 3 (R0) to Pt–WO 3− x (R3), the desorption peak shifted to a lower temperature, suggesting that it was easier for dissociative adsorption over Pt0 species.…”

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confidence: 98%

Synergy of metallic Pt and oxygen vacancy sites in Pt–WO_3−xcatalysts for efficiently promoting vanillin hydrodeoxygenation to methylcyclohexane

et al. 2022

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Effect of microwave calcination on catalytic properties of Pt/MgAl(Sn)Ox catalyst in cyclohexane dehydrogenation to cyclohexene

Cited by 17 publications

References 51 publications

Gas-solid catalytic dehydrogenation of propane and butanes to olefins

Gas-solid catalytic dehydrogenation of propane and butanes to olefins

Crystal Facet Structure Dependence and Promising Pd–Pt Catalytic Materials for Perhydroacenaphthene Dehydrogenation

Synergy of metallic Pt and oxygen vacancy sites in Pt–WO_3−xcatalysts for efficiently promoting vanillin hydrodeoxygenation to methylcyclohexane

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Effect of microwave calcination on catalytic properties of Pt/MgAl(Sn)Ox catalyst in cyclohexane dehydrogenation to cyclohexene

Cited by 17 publications

References 51 publications

Gas-solid catalytic dehydrogenation of propane and butanes to olefins

Gas-solid catalytic dehydrogenation of propane and butanes to olefins

Crystal Facet Structure Dependence and Promising Pd–Pt Catalytic Materials for Perhydroacenaphthene Dehydrogenation

Synergy of metallic Pt and oxygen vacancy sites in Pt–WO3−xcatalysts for efficiently promoting vanillin hydrodeoxygenation to methylcyclohexane

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Product

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Synergy of metallic Pt and oxygen vacancy sites in Pt–WO_3−xcatalysts for efficiently promoting vanillin hydrodeoxygenation to methylcyclohexane