【摘 要】
：
In this presentation,we firstly synthesized two silicalite-1 samples with different morphologies then we used propane as the adsorbate to study the adsorption and diffusion process over them.And then,
【机 构】
：
Petrochemical Research Institute, Petro China Company Limited, Beijing, 100195, China
论文部分内容阅读
In this presentation,we firstly synthesized two silicalite-1 samples with different morphologies then we used propane as the adsorbate to study the adsorption and diffusion process over them.And then,their thermodynamic and kinetic functions were calculated and their differences were discussed based on the difference in the sample morphologies
其他文献
分子筛是最重要的一类催化材料，研究最活跃，应用最广。面对未来我国能源化工产业绿色低碳发展的要求，应分三个层次发展分子筛催化材料。第一层次，开展Y、ZSM-5、Beta、MOR、MCM-22 和SAPO-34 等六类骨干分子筛的研究，支撑炼油、石油化工和煤化工相关催化剂近期升级换代的需求。
Zeolite catalysts have been widely used in industrial processes, and their syntheses normally require the presence of solvents such as water and alcohols in hydrothermal, solvothermal, and ionothermal
SAPO-34 samples with sheet-like and cubic morphology were synthesized under microwave and hydrothermal conditions,respectively.The sheet-like SAPO-34 showed a thickness of 130 nm with a BET surface ar
The dual-template system consisting of ethylamine (EA) and diethylamine (DEA) was used as structure-directing agent in the synthesis of ZSM-22/ZSM-23 intergrowth zeolite.The influence of template agen
在烃类催化裂解反应中,硅酸铝分子筛催化剂的积炭和骨架脱铝是失活的主要原因.在原料气中添加一定量的水蒸气能有效地防止积炭、延长催化剂的寿命,但同时会造成分子筛脱铝加剧而丧失活性位.HZSM-5是一种高效的酸催化剂,保证其水热稳定性是其长期实际应用的关键.P修饰的HZSM-5体现出了很高的水热稳定性,阐明磷增强HZSM-5的水热稳定性的本质,开发新一代具有水热稳定性好、高活性、高选择性的碳四烯烃裂解制
水热晶化法制备了HZSM-5/SiO2复合分子筛，具有中孔-微孔，与HZSM-5 相比，表面总酸量降低，弱酸比例和B/L值均增大。对高碳烃转化具有高的催化活性。在常压、550℃以及原料空速1h-1条件下，烃转化率＞90％，芳烃转化率＞85％，低碳烯烃(C2=～C4=)产物选择性＞86％。
采用动态水热法合成了不同硅铝比,不同铁含量的系列纳米片型Fe-ZSM-5 分子筛催化剂,利用XRD、BET、SEM、NH3-TPD对其结构进行表征.XRD表明,动态晶化更易合成且结晶度更高,Fe进入到分子筛骨架中.SEM显示,Fe-ZSM-5 催化剂是由许多片状纳米晶组成的微球.NH3-TPD测试表明,随着铁含量的增加,分子筛的总酸量不断增加,Fe-ZSM-5(20,1：1)在250℃显示出L酸性
Pure hexagonal close-packed (hcp) mesostructure with P63/mmc symmetry of silica mesoporous crystals (SMCs) has been obtained in the synthetic system of cationic gemini surfactant with the co-structur
A comparative study about the effect of the enhanced hydrophobicity of mesoporous MCM-41 molecular sieves on the properties adsorbing water and organics has been first demonstrated systematically,whic
The interactions between CO2 and various surface functional groups and terminations in activated carbon were examined using high-accuracy ab-initio methods.We showed that the adsorption of CO2 compris