欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
比较了几种典型的沸石分子筛在氯甲烷转化制乙烯、丙烯和丁烯等低碳烯烃反应中的催化性能,发现H-ZSM-34具有较佳的催化活性和选择性.经乙二胺四乙酸二钠(Na2H2EDTA)水溶液处理,并经离子交换及焙烧后,H-ZSM-34上氯甲烷转化制低碳烯烃的催化性能显著改善.当Na2H2EDTA浓度为0.1 mol/L,反应温度为673 K,CH3Cl分压9.2 kPa时,C2–C4烯烃选择性和收率分别达82%和61%.研究还发现,Ce修饰H-ZSM-34催化剂同样可改善氯甲烷制低碳烯烃的选择性和收率.表征结果表明,Na2H2EDTA处理和Ce修饰均降低了H-ZSM-34的酸性.酸性的降低可抑制低碳烯烃的氢转移反应,继而避免了其进一步转化为低碳烷烃.
英文摘要：
Among several typical zeolites,H-ZSM-34 was found to be an efficient catalyst for the conversion of methyl chloride to lower olefins,i.e.,ethylene,propylene,and butenes.Treatment of H-ZSM-34 with a Na2 H2 EDTA(EDTA = ethylenediaminetetraacetate) aqueous solution followed by ion exchange and calcination enhanced the catalytic performance significantly.The selectivity to lower olefins increased significantly for certain Na2 H2 EDTA aqueous solution concentrations;when the H-ZSM-34 catalyst was treated with a 0.1 mol/L Na2 H2 EDTA solution,the selectivity and yield of C2 –C4 olefins reached 82% and 61%,respectively,at 673 K and a CH3 Cl partial pressure of 9.2 kPa.The modifica- tion of H-ZSM-34 with Ce ions improved C2 –C4 olefin selectivity and yield.Catalyst characterization suggests that treatment with Na2 H2 EDTA or modification by Ce decreases the acidity of H-ZSM-34. The weakened acidity of the treated or modified H-ZSM-34 may suppress the hydrogen transfer reaction and prevent lower olefins from further transformation to paraffins.
同期刊论文项目
同项目期刊论文
Supported monodisperse Pt nanoparticles from Pt-3(CO)(3)(mu(2)-CO)(3) (5)(2-) clusters for investiga
Cu24O24Si8R8: Organic Soluble 56-Membered Copper(I) Siloxane Cage and Its Use in Homogeneous Catalys
Probing Stepwise Reaction of NNP-Ligand Copper(I) Complex with Elemental Sulfur by Using N-Heterocyc
Structure and catalytic performance of alumina-supported copper-cobalt catalysts for carbon monoxide
Highly efficient mesostructured Ag/SBA-15 catalysts for the chemoselective synthesis of methyl glyco
Bronsted acidic ionic liquid as an efficient and recyclable promoter for hydroesterification of olef
Copper-catalyzed propylene epoxidation by oxygen Significant promoting effect of vanadium on unsuppo
Iron-Catalyzed Highly Enantioselective Reduction of Aromatic Ketones with Chiral P2N4-Type Macrocycl
Spectroscopic and DFT Study on the Interaction System of Vanadium with L-Proline in Aqueous Solution
Trends in R-X Bond Dissociation Energies (R-center dot = Me, Et, i-Pr, t-Bu, X-center dot = H, Me, C
Theoretical studies of Na+ location in ZSM-5: Model selection for accurate coordination structure an
Acid-catalysed direct transformation of cellulose into methyl glucosides in methanol at moderate tem
Exploring the Sodium Cation Location and Aluminum Distribution in ZSM-5: A Systematic Study by the E
Conversion of cellobiose into sorbitol in neutral water medium over carbon nanotube-supported ruthen
Production of ethanol by gas phase hydrogenation of acetic acid over carbon nanotube-supported Pt-Sn
PVP-stabilized heteropolyacids as reusable self-assembling catalysts for alcoholysis of cellulosic s
DCMB that Combines Divide-and-Conquer and Mixed-Basis Set Methods for Accurate Geometry Optimization
Cu/SiO2 hybrid catalysts containing HZSM-5 with enhanced activity and stability for selective hydrog
An efficient Ni-Mo-K sulfide catalyst doped with CNTs for conversion of syngas to ethanol and higher
Improved performance of magnetically recoverable Ce-promoted Ni/Al2O3 catalysts for aqueous-phase hy
Electronic Properties and Desolvation Penalties of Metal Ions Plus Protein Electrostatics Dictate th
Influence of the support and promotion on the structure and catalytic performance of copper-cobalt c
Vapor-phase hydrogenation of dimethyl oxalate over a CNTs-Cu-SiO2 hybrid catalyst with enhanced acti
Synthesis of novel chiral tetraaza ligands and their application in enantioselective transfer hydrog
A boracite metal-organic framework displaying selective gas sorption and guest-dependent spin-crosso
Na+-intercalated carbon nanotubes-supported platinum nanoparticles as new highly effective catalysts
Nonfitting protein-ligand interaction scoring function based on first-principles theoretical chemist
Impact of Hydrogenolysis on the selectivity of the Fischer-Tropsch synthesis: diesel fuel production
Carbon-supported palladium catalysts for the direct synthesis of hydrogen peroxide from hydrogen and
Selective transformation of syngas into gasoline-range hydrocarbons over mesoporous H-ZSM-5 supporte
Carbon supported palladium catalysts for the direct synthesis of hydrogen peroxide from hydrogen and
Photocatalytic Conversion of Carbon Dioxide with Water into Methane: Platinum and copper(I) oxide co
Effect of Calcination Temperature and Pretreatment with Reaction Gas on Properties of Co/gamma-Al2O3
Selective conversion of cellobiose and cellulose into gluconic acid in water in the presence of oxyg
Development of Bifunctional Catalysts for the Conversions of Cellulose or Cellobiose into Polyols an
Mesoporous Zeolite-Supported Ruthenium Nanoparticles as Highly Selective Fischer-Tropsch Catalysts f
Direct transformation of cellulose into methyl and ethyl glucosides in methanol and ethanol media ca
Mechanistic aspects of photo-induced formation of peroxide ions on the surface of cubic Ln(2)O(3) (L
Nanocomposites of TiO2 and Reduced Graphene Oxide as Efficient Photocatalysts for Hydrogen Evolution
In Situ Raman and Pulse Reaction Study on the Partial Oxidation of Methane to Synthesis Gas over a P
Influence of Ni Chemical States on the Partial Oxidation Mechanism of Methane: An Energetics Analysi
Significant Synergistic Effect between Supported Ruthenium and Copper Oxides for Propylene Epoxidati
Selective transformation of syngas into gasoline-range hydrocarbons over mesoporous H-ZSM-5-supporte
Synthesis and Catalytic Performances of Mesoporous CeNiO Catalysts for the Oxidative Dehydrogenation
Infrared Spectroscopy Study of CO Adsorption on Rh-Mn/SiO2 Catalyst for C-2-Oxygenates Synthesis fro
Transformation of Methane to Propylene: A Two-Step Reaction Route Catalyzed by Modified CeO2 Nanocry
Effect of size of catalytically active phases in the dehydrogenation of alcohols and the challenging
Effects of polyvinylpyrrolidone on the preparation of supported La2O3 catalysts by a modified impreg
Base-Free Aerobic Oxidation of 5-Hydroxymethyl-furfural to 2,5-Furandicarboxylic Acid in Water Catal
Cs-substituted tungstophosphate-supported ruthenium nanoparticles as efficient and robust bifunction
MgO- and Pt-Promoted TiO2 as an efficient photocatalyst for the preferential reduction of carbon dio
Fluoride-treated H-ZSM-5 as a highly selective and stable catalyst for the production of propylene f
Active site and reaction mechanism for the epoxidation of propylene by oxygen over CuOx/SiO2 catalys
Synergetic effect of VOx and TeOx species in mesoporous SiO2 on selective oxidation of propane to ac
Carbon nanotube-supported Fe-Mn nanoparticles: A model catalyst for direct conversion of syngas to l
期刊信息
位置：