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：
对流化床中甲烷裂解制氢与催化剂再生过程进行了研究。选用25Ni／Cu-Al2O3和75Ni／Cu-Al2O3两种催化剂，分别在500℃和650℃进行甲烷裂解制氢与催化剂再生，反应与再生过程的温度与时间保持相同，催化剂再生时采用空气进行再生，气体流量均为370mL/min（STP）。实验结果表明，镍质量分数较低时催化剂表现出较好的稳定性，温度增加催化剂的稳定性降低。甲烷转化率随操作周期呈下降趋势，在500℃制氢与再生操作达到第五周期时，甲烷转化率趋于稳定。对切换时间的影响研究表明，切换时间存在一个最佳值，即切换5min时甲烷裂解制氢效率最高。对生成碳产品进行了XRD和TEM表征，并对实验结果进行了讨论。
英文摘要：
Process for hydrogen production from methane decomposition in a fluidized bed and catalyst regeneration by air were studied. Two nickel catalysts, 25Ni/Cu-Al2O3 and 75Ni/Cu-Al2O3 ,were used in the process. Methane decomposition and catalyst reactivation reactions were conducted at the same temperature,500℃and 650℃ respectively. Gas volume was controlled in 370 mL/min（STP）. The results reveal that the catalytic stability of low nickel content catalyst excels that of high nickel content catalyst and its catalytic activity reduces with temperature increasing and operation cycles. But after 5^th operation cycle, methane conversion trends to be a constant value. At same time it is found that switch time affects the methane conversion, i.e. there is an optimal switch time of 5 min. The samples formed after methane decomposition are characterized by XRD and TEM. Finally the results were discussed.
同期刊论文项目
同项目期刊论文
Analysis of oxygen permeation through dense ceramic membranes with chemical reactions of finite rate
Evidence of composition deviation of metal particles of a Ni–Cu/Al2O3 catalyst during methane decomp
A high performance composite ionic conducting electrolyte for intermediate temperature fuel cell and
MCM-41 Overgrown on Y Composite Zeolite as Support of Pd-Pt Catalyst for Hydrogenation of Polyaromat
Suzuki Coupling Reactions in Ether-Functionalized Ionic Liquids: The Importance of Weakly Interactin
Biphasic Hydrogenation over PVP Stabilized Rh Nanoparticles in Hydroxyl Functionalized Ionic Liquids
Treatment of the carbon nanofiber surfaces in mixed concentrated HNO3-H2SO4, and the catalytic activ
Enhanced Activation and Decomposition of CH4 by the Addition of C2H4 or C2H2 for Hydrogen and Carbon
Preparation and characterization of Beta/MCM-41composite zeolite with a stepwise-distributed pore st
Effect of the sulfidation process on the mechanical properties of a CoMoP/Al2O3 hydrotreating cataly
High-Temperature Stability of Palladium Membranes on Porous Metal Supports with Different Intermedia
Effect of Alkaline Treatment on the Catalytic Performance of ZSM-5 Catalyst in Pyridine and Picoline
Low-temperature synthesis of carbon onions by chemical vapor deposition using a nickel catalyst supp
Electroless plating synthesis, characterization and permeation properties of Pd-Cu membranes support
Bamboo-shaped carbon nanotubes produced by catalytic decomposition of methane over nickel nanopartic
Effect of surface acid amount of Y zeolite on activity and sulfur tolerance of supported Pd-Pt catal
Study on sulfur tolerance of Pd-Pt catalyst supported on carbon nanofibers for hydrogenation of naph
Influence of pretreatment condition of metal support on performance of metal supported hexaaluminate
Promoting effects of doping ZnO into coprecipitated Ni-Al2O3 catalyst on methane decomposition to hy
位置：