Catalysts, Process Optimization, and Kinetics for the Production of Methyl Acrylate over Vanadium Phosphorus Oxide Catalysts

Guo, Xinpeng; Yang, Dan; Zuo, Cuncun; Peng, Zhijian; Li, Chunshan; Zhang, Suojiang

doi:10.1021/acs.iecr.7b01212

Cited by 48 publications

(28 citation statements)

References 47 publications

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“…There are two distinct broad peaks in samples between 100–200 and 420–575 °C (Figure 7a–e). Generally, the acidic sites on the surface of the catalyst are classified into weak, medium and strong acid sites, corresponding desorption ranges at 100–300, 300–450 and above 450 °C . So the desorption temperature at 100 −200 °C is attributed to weak acid sites in Figure A (a‐e), which is corresponding to the Brönsted acid from P‐OH, and the temperatures at 395–428 and 490–575 °C are attributed to medium and strong acid sites, respectively.…”

Section: Resultssupporting

confidence: 87%

Amorphous Porous Chromium‐Zirconium Bimetallic Phosphate: Synthesis, Characterization and Application in Liquid Phase Oxidation of Hydrocarbons by Different Oxygen Sources

et al. 2020

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CrÀ Zr bimetallic phosphates catalysts were prepared by sol-gel method and used in the oxidation of cyclohexane, ethylbenzene and cyclohexene, respectively. The catalysts were characterized by a variety of analytical techniques. The results show that chromium ions enter the framework of mesoporous zirconium phosphate, CrÀ Zr phosphates catalysts with molar ratio of Cr: Zr = 2 (CrZr 2 P) or Cr: Zr = 1 (CrZrP) still retain the mesoporous structure and form composite metal phosphates. Two active centers-redox (Cr 6 + ) and acidic sites in these bimetallic phosphates play a synergistic catalytic role in the oxidation of CÀ H bond. Catalytic activity is closely related to the amount of acid or acid strength, the C=O product selectivity depends on the amount and high dispersion of Cr 6 + species. Acidic sites and redox sites are affected by different molar ratios of chromium/ zirconium. Among the CrÀ Zr phosphates catalysts, CrZr 2 P and CrZrP catalysts show excellent activity, just because the formation of mesoporous structure leads to the uniform dispersion of acidic and redox sites.[a] L.

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Section: Resultssupporting

confidence: 87%

Amorphous Porous Chromium‐Zirconium Bimetallic Phosphate: Synthesis, Characterization and Application in Liquid Phase Oxidation of Hydrocarbons by Different Oxygen Sources

et al. 2020

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“…Acrylic acid (AA) together with methyl acrylate (MA) were widely applied for producing adhesives, plastics, PAN fibers, hydrogel, biomimetic materials, coatings etc. 1–3 . At present, the traditional way to make AA involves successive oxidation of propylene 4–9 .…”

Section: Introductionmentioning

confidence: 99%

Vanadium Phosphorus Oxide/Siliceous Mesostructured Cellular Foams: efficient and selective for sustainable acrylic acid production via condensation route

Wang

et al. 2019

Sci Rep

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A new type of supported vanadium phosphorus oxide (VPO) with self-phase regulation was simply fabricated (organic solvent free) for the first time by depositing the specific VPO precursor NH4(VO2)HPO4 onto the Siliceous Mesostructured Cellular Foams (MCF) with controlled activation. The resulting materials were found to be highly efficient and selective for sustainable acrylic acid (AA) plus methyl acrylate (MA) production via a condensation route between acetic acid (HAc) and formaldehyde (HCHO). A (AA + MA) yield of 83.7% (HCHO input-based) or a (AA + MA) selectivity of 81.7% (converted HAc-based) are achievable at 360 °C. The systematic characterizations and evaluations demonstrate a unique surface regulation occurring between the MCF and the NH4(VO2)HPO4 precursor. NH3 release upon activation of NH4(VO2)HPO4 precursor together with adsorption of NH3 by MCF automatically induces partial reduction of V5+ whose content is fine-tunable by the VPO loading. Such a functionalization simultaneously modifies phase constitution and surface acidity/basicity of catalyst, hence readily controls catalytic performance.

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“…The catalytic performances (activity and reusability) promoted by axial coordination, covalently grafting, and nanocavity of chitosan were investigated. RSM is a very popular‐used statistical technique,, which fits to be used in research into complex variable processes. It could help us obtaining optimized reaction conditions and high catalytic performances of Co TPFPP/np‐CTS.Main Text Paragraph.…”

Section: Introductionmentioning

confidence: 99%

Highly Active Catalysis of Cobalt Tetrakis(pentafluorophenyl)porphyrin Promoted by Chitosan for Cyclohexane Oxidation in Response‐Surface‐Methodology‐Optimized Reaction Conditions

Huang

Yuan

et al. 2019

ChemistryOpen

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We aimed at elevating catalytic performances of cobalt tetrakis(pentafluorophenyl)porphyrin (Co TPFPP) through axial coordination, nanocavities, and covalently grafting action. The Co TPFPP was immobilized onto nanoporous and nonporous chitosan, forming Co TPFPP/np‐ and nonp‐CTS catalysts, respectively. The catalysts were characterized by various spectroscopic techniques. The catalytic performances of these catalysts for cyclohexane oxidation under response‐surface‐methodology‐optimized oxidation reaction conditions were estimated and compared. Co TPFPP/np‐CTS was an excellent catalyst at aspect of catalytic activity, exhibiting the considerable potential reusability, 24.2 mol % yields (KA oil : cyclohexanone and cyclohexanol) in average, and total turnover frequencies (TOFs) of 3.25×106 h−1. This is attributed to the structural characteristics of the Co TPFPP/np‐CTS catalyst: the cobalt porphyrin molecules could be highly scattered on CTS, forming the independent active sites, and were not leached. The axial coordination exerted the most important effect on the catalytic activity, and the covalent grafting action had a decisive effect on the increase of the total TOFs and on the reusability of the catalyst.

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Catalysts, Process Optimization, and Kinetics for the Production of Methyl Acrylate over Vanadium Phosphorus Oxide Catalysts

Cited by 48 publications

References 47 publications

Amorphous Porous Chromium‐Zirconium Bimetallic Phosphate: Synthesis, Characterization and Application in Liquid Phase Oxidation of Hydrocarbons by Different Oxygen Sources

Amorphous Porous Chromium‐Zirconium Bimetallic Phosphate: Synthesis, Characterization and Application in Liquid Phase Oxidation of Hydrocarbons by Different Oxygen Sources

Vanadium Phosphorus Oxide/Siliceous Mesostructured Cellular Foams: efficient and selective for sustainable acrylic acid production via condensation route

Highly Active Catalysis of Cobalt Tetrakis(pentafluorophenyl)porphyrin Promoted by Chitosan for Cyclohexane Oxidation in Response‐Surface‐Methodology‐Optimized Reaction Conditions

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