Selective Hydrogenation of Acetylene over a MoP Catalyst

Zhou, Guilin; Wang, Puguang; Jiang, Zongxuan; Ying, Pinliang; Li, Can

doi:10.1016/s1872-2067(10)60155-6

Cited by 15 publications

(3 citation statements)

References 10 publications

(9 reference statements)

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“…Since the as-prepared metal phosphides were usually passivated before 50 exposure to air, the surface region of all the samples should be dominated by oxidized species and underlying reduced species associated with the phosphide phases. 35 The binding energies for oxidized Mo (228.7 eV), Ni (855.2 eV), Co (779.6 eV) and P (133.3-133.4 eV) were consistent with assignments by others to Mo 2+ , Ni 2+ , Co 2+ /Co 3+ and P 5+ 5 species, 9,[35][36][37] respectively. The binding energies for the peaks associated with reduced Mo (228.2 eV), Ni (853.5 eV), Co (778.4 eV) and P (129.5-129.8 eV) species were consistent with those reported for MoP, Ni 2 P, Co 2 P and phosphide, 9,35,38 respectively.…”

Section: Sample Characterizationssupporting

confidence: 84%

A novel synthetic route to transition metal phosphide nanoparticles

Yao

Wang

et al. 2015

Dalton Trans.

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A novel synthetic route was developed to prepare nano-sized and well-dispersed phosphides of transition metals (Mo, Ni, and Co) from their corresponding oxide precursors. The current approach produced metal phosphides in dimethyl ether (DME) using the rapid heating reduction (RHR) method. The synthesis of phosphides in DME was interesting, since the composition of gas-phase products was predominantly H2, CO and CH4 with a minor amount of CO2 but without H2O. Based on XRD and MS results, the formation mechanism of the phosphides was proposed. The overall synthesis process cannot simply be regarded as the reduction of an oxide precursor and the decomposition of DME. The product distribution should be ascribed to a combination of other catalytic reactions. In addition, it is noteworthy that compared with the traditional method, viz. temperature-programmed reduction in H2 (TPR-H2), the present method used a higher heating rate to shorten the reaction time and can yield more finely dispersed metal phosphide nanoparticles. The good dispersion of phosphide nanoparticles is probably achieved due to the fact that no H2O was released in the RHR-DME process, which can avoid strong hydrothermal sintering.

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Section: Sample Characterizationssupporting

confidence: 84%

A novel synthetic route to transition metal phosphide nanoparticles

Yao

Wang

et al. 2015

Dalton Trans.

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“…Zhang et al [10] used PtSn as an active site supported on 2 3 on the hydrogenation reaction of acetic acid. On the other hand, Zhou et al [11] also used 2 3 as support material for the synthesis of Au/ 2 3 for hydrogenation of acetylene. This research aims to synthesize the ZIF-8/ 2 3 composite and identity of structural, morphological, functional groups, and surface as well as pores of ZIF-8/ 2 3 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Zeolitic Imidazolate Framework-8 (ZIF-8)/Al2O3 Composite

Aulia¹,

Ahnaf²,

Irianto³

et al. 2020

JTS

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Metal-organic framework (MOF) such as ZIF-8 is the tremendous porous material applied in many fields due to high specific surface area and excellent regularity of pores. One technique to improve the physical properties of ZIF-8 with the formation of a composite between a metal oxide and MOF. ZIF-8 and ZIF-8/ 2 3 were successfully synthesized by the solvothermal method with an variation of 19%, 38%, and 76%. The ZIF-8/ 2 3 were characterized by XRD, FTIR, SEM, and 2 Physisorption. The diffractogram shows that the appearing of ZIF-8's peak on 2θ = 7.26; 10.41, 12.66, 16.41, and 17.95°. The morphological of ZIF-8 crystals had a cubic shape. Then the ZIF-8/ 2 3 had different shapes with ZIF-8. Based on the FTIR result, the Zn-N peak appears on 420 −1 , which indicates the bonding between metal and organic ligand for ZIF-8/ 2 3 has an additional spike on 825 −1 due to the vibration of − − .

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“…4 (b). It can be seen that there are two P 2 p peaks at 129.3~129.8 eV and 133.8~134.7 eV, respectively [36][37][38][39][40] . The former is attributed to the reduced P bonded to the Mo atom in MoP, and the latter is ascribed to PO 3 − 4 species which may be from passivation or transfer process.…”

Section: Xps Resultsmentioning

confidence: 99%