Promoting Effect of Tin on Ni/C Catalyst for Methanol Carbonylation

Liu, Tuan Chi; Chiu, Shwu Jer

doi:10.1021/ie00027a003

Cited by 23 publications

(17 citation statements)

References 11 publications

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“…Another possible pathway for the formation of acetic acid is methanol carbonylation. This reaction has been reported previously over nickel-based solid catalysts, nonetheless, always promoted by methyl iodide (CH 3 I) [31]. Only carbon monoxide and hydrogen were obtained as products without CH 3 I in that study.…”

Section: Selection Of Reactions For the Kinetic Modelsupporting

confidence: 84%

“…To calculate the molar flow rate of liquids collected from the reactor, the outlet volumetric flow was assumed the same as the inlet volumetric flow because the outlet flow could not be accurately measured due to experimental limitations. In Equations (31) and (32), the mass fractions of oxygenated hydrocarbons (w oxy ) refers to the mass fraction sum of those oxygenates whose concentration decreased during the experiment (oxygenates with positive individual conversions in Figures S1 and S2).…”

Section: Apr Of Ft Watermentioning

confidence: 99%

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Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst

et al. 2019

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In the Fischer–Tropsch (FT) synthesis, a mixture of CO and H2 is converted into hydrocarbons and water with diluted organics. This water fraction with oxygenated hydrocarbons can be processed through aqueous-phase reforming (APR) to produce H2. Therefore, the APR of FT water may decrease the environmental impact of organic waters and improve the efficiency of the FT process. This work aimed at developing a kinetic model for the APR of FT water. APR experiments were conducted with real FT water in a continuous packed-bed reactor at different operating conditions of temperature (210–240 °C), pressure (3.2–4.5 MPa) and weight hourly space velocity (WHSV) (40–200 h−1) over a nickel-copper catalyst supported on ceria-zirconia. The kinetic model considered C1-C4 alcohols as reactants, H2, CO, CO2 and CH4 as the gaseous products, and acetic acid as the only liquid product. The kinetic model included seven reactions, the reaction rates of which were expressed with power law equations. The kinetic parameters were estimated with variances and confidence intervals that explain the accuracy of the model to estimate the outlet liquid composition resulting from the APR of FT water. The kinetic model developed in this work may facilitate the development of APR to be integrated in a FT synthesis process.

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Section: Selection Of Reactions For the Kinetic Modelsupporting

confidence: 84%

Section: Apr Of Ft Watermentioning

confidence: 99%

Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst

et al. 2019

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“…The reported heterogeneous catalysts for a vaporphase or liquid-phase carbonylation of methanol to AA with their characteristics are briefly summarized in Tables 4 and 5. Some different supporting materials such as active carbon, clay, alumina, silica, zeolite or other adsorbents have been recently investigated for developing the effective heterogeneous catalysts [45][46][47][48][49][50][51][52][53][54][55][56][57]. In addition, some novel heterogeneous catalytic systems for a methanol carbonylation to AA in a liquid-phase with their preparation methods are also summarized in Table 5, which are recently proposed from our laboratory using a rhodium complex-immobilized catalysts on various supporting materials such as W x C, Fe 3 O 4 and transition metal-incorporated graphitic-C 3 N 4 and various metal-incorporated graphitic-C 3 N 4 catalysts as well [53][54][55][56][57].…”

Section: Heterogeneous Catalytic Systems For Aa Synthesis By Methanolmentioning

confidence: 99%

“…In addition, the effects of tin promoter on the Ni/C heterogeneous catalyst was also investigated for a vaporphase methanol carbonylation in an atmospheric pressure [50]. The tin promoter showed significant effects on methanol conversion and AA selectivity, which was attributed to an increase of CO adsorption and its strength on the Sn-modified Ni/C catalyst by forming an active Ni 3 Sn species on the catalyst surfaces.…”

Section: Nickel-based Heterogeneous Catalysts In a Vaporphasementioning

confidence: 99%

Review of Acetic Acid Synthesis from Various Feedstocks Through Different Catalytic Processes

et al. 2016

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Acetic acid (AA) has been largely used with a wide range of applications such as a raw material for a synthesis of vinyl acetate monomer, cellulose acetate or acetate anhydrate, acetate ester and a solvent for a synthesis of terephthalic acid and so on. The present paper briefly summarizes the commercialized chemical processes with their Rh or Ir-based catalytic systems in a liquid-phase carbonylation reaction such as Monsanto, Cativa and Acetica processes. In addition, some alternative catalytic systems such as heterogeneous catalysts to produce AA by direct oxidation or indirect carbonylation of dimethyl ether through BP-SaaBre process in a gas-phase reaction to solve some problems such as a difficult separation of homogeneous catalysts in a corrosive reaction medium. Some home-made heterogeneous catalysts such as a rhodium incorporated graphitic carbon nitride (Rh-g-C 3 N 4 ) and some heterogenized homogeneous catalysts using the supports of tungsten carbide, iron oxide or graphitic carbon nitride containing rhodium complexes were also introduced for the synthesis of AA through a liquid-phase methanol carbonylation reaction to effectively solve the leaching problem of active rhodium metal as well as to mitigate the separation problem of homogeneous catalysts.

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“…A significant amount of experimental and theoretical studies on the deposition of tin on the nickel surfaces have been conducted due to its importance in electronics and catalytic processes [7][8][9][10][11][12][13][14][15]. The formation of surface alloys seem to be very important in the chemical behaviour of the bimetallic catalyst.…”

Section: Introductionmentioning

confidence: 99%

Structures, energetics and magnetic properties of (NiSn) n clusters with n = 1–6

Shewale¹,

Deshpande²,

Kanhere

2009

Pramana - J Phys

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We report the results of calculations which were performed to investigate equilibrium structures, electronic and magnetic properties of stoichiometric (NiSn)n clusters with n = 1-6 within the framework of density functional theory. The calculated results show that the structural arrangement of (NiSn)n clusters is dominated by the Ni-Sn and Ni-Ni interactions. We find that these binary clusters show significant variation in the geometries as compared to that of the host nickel clusters. The preference for tetrahedron unit of Ni3Sn is seen in the lowest-energy configuration of these clusters. The multi-centre bonding between Ni atoms play an important role in stabilizing the stoichiometric Ni-Sn clusters. Doping of Sn atoms enhances the binding energy and reduces the ionization potential of nickel clusters. These binary clusters prefer the lowest spin state. For (NiSn)6 the magnetic moment is 0 µB. The complete quenching of the cluster magnetic moment appears to be due to the antiferromagnetic alignment of atomic spins as revealed by the spin density plots.

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Promoting Effect of Tin on Ni/C Catalyst for Methanol Carbonylation

Cited by 23 publications

References 11 publications

Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst

Kinetic Modelling of the Aqueous-Phase Reforming of Fischer-Tropsch Water over Ceria-Zirconia Supported Nickel-Copper Catalyst

Review of Acetic Acid Synthesis from Various Feedstocks Through Different Catalytic Processes

Structures, energetics and magnetic properties of (NiSn) n clusters with n = 1–6

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