登录

双语推荐：介孔

进入期刊文章
综述了介孔碳材料制备的研究进展,对介孔碳改性方面的研究工作进行了着重的推介。并介绍了在介孔碳研究中,不同的改性方法对介孔碳性能的影响,特别介绍了现阶段以介孔碳为载体的制氢/加氢反应性能的研究。最后对介孔碳在生物油加氢改质的潜在应用和发展方向进行了展望。
The bio-oil,as low-cost and renewable fuel energy,is considered as a kind of important alternative fuel and has aroused many researchers interests in domestic and aboard. Hydrogenation is one of the promising methods on upgrading bio-oil,wherein the investigation on the catalysts especially the carrier is the key. This article reviewed the preparation of mesoporous carbons and the modification of mesoporous carbons was discussed emphatically. It also introduced different methods on modifying mesoporous carbons. The hydrogenation properties of catalysts using mesoporous carbons as carriers were analyzed. Finally,the potential application and development on the bio-oil upgrading through using mesoporous carbons were proposed.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
将一种新型Gemini表面活性剂，丙撑基双（十八烷基二甲基氯化铵）[C18H37（CH3）2-N＋-（CH2）3-N＋-（CH3）2C18H37]Cl2（C18-3-18），作为介孔模板剂用于水热法合成介孔ZSM-5分子筛。结果表明，在130oC低温晶化即可高效合成介孔ZSM-5分子刷。 C18-3-18的加入量可影响到所合成介孔ZSM-5分子筛的相对结晶度和织构性质，它的形成遵从一个转晶过程。在合成初期，凝胶中介孔模板剂C18-3-18的使用导向了介孔材料的生成；随后在TPABr的模板作用下，介孔材料慢慢转晶生成具有MFI结构的介孔ZSM-5；然后所合成的介孔ZSM-5晶粒进一步长大并聚集形成块状颗粒，同时产生晶间介孔。 C18-3-18作为介孔导向剂不仅可用于合成介孔ZSM-5分子筛，也可用于其它介孔分子筛的合成中。
A new gemini surfactant, [C18H37(CH3)2-N+-(CH2)3-N+-(CH3)2C18H37]Cl2 (C18-3-18), has been success-fully used as the mesopore directing agent in the hydrothermal synthesis of mesoporous ZSM-5 (MZSM-5). The synthesis of MZSM-5 was realized with a low temperature crystallization process at 130 °C. The amount of C18-3-18 used in the synthesis affected the relative crystallinity and the textural properties of the obtained MZSM-5. Detailed investigation showed that the formation of MZSM-5 followed a crystallization transformation process. The use of C18-3-18 resulted in the formation of mesoporous material during the early stage of the synthesis, which was converted into MZSM-5 crystals templated by tetrapropylammonium bromide to form the MFI phase. As the synthesis pro-ceeded, the MZSM-5 crystals aggregated into particles by weak interactions. This work shows that C18-3-18 can be used as a mesopore directing agent, which could provide a route for the synthesis of other mesoporous

[ 可能符合您检索需要的词汇 ]

进入期刊文章
总结了合成MCM-48介孔分子筛的方法,概括了合成MCM-48介孔分子筛的影响因素,综述了MCM-48介孔分子筛的改性应用,最后指出了MCM-48介孔材料的发展趋势。
The preparation methods , the main influencing factors of synthesis and the modified application of MCM‐48 mesoporous molecular sieve were summarized . Finally , the research emphasis of MCM‐48 mesoporous molecular sieve in the future was predicted .

[ 可能符合您检索需要的词汇 ]

进入期刊文章
具有特殊形貌的介孔氧化硅不仅具有比表面积高、孔径均一可调、形貌多样可控等优点,而且其特殊的介孔结构赋予了材料特殊的用途;不仅是制备高性能催化剂和药物分子的理想载体,而且在吸附分离、金属防腐以及光电磁领域有良好的应用前景。本文介绍了近年来特殊形貌介孔氧化硅材料的合成研究,这些材料包括纳米花状介孔氧化硅、新型球状介孔氧化硅、带状介孔氧化硅、立方体介孔氧化硅等,以及这些特殊结构的介孔氧化硅材料作为载体或前体在催化及药物控释等领域特殊应用的研究进展。指出特殊形貌的介孔氧化硅在电池和能源等方向的研究应用将是今后的研究热点。
Mesoporous silica with special morphology has been not only an ideal support to prepare high-performance catalysts and drugs,but also has received rapid attention in various applications, such as adsorption,separation and photo-electro-magnetic field,due to their unique structural features, such as high surface area,varied morphology,tunable nanometer-scale pore size,and special meso-structure. The latest progress of synthesis of mesoporous silica with special morphology, including nanoflowery,novel porous spheres,ribbons and nanocubes,as well as their unique applications in catalysis and controlled release are introduced. Besides,the applications in cell and energy will be hot in future research.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
Al掺杂的介孔SBA-15材料不仅保持了介孔SBA-15材料原有的结构特征,还赋予了材料新的催化活性位,成为近年来介孔材料领域最为活跃的研究对象之一。本文详细阐述了近十几年来Al-SBA-15介孔材料的研究进展,比较了各合成方法之间的区别,并讨论了Si/Al摩尔比、合成方法和反应条件等因素对Al原子嵌入SBA-15介孔骨架的效率以及介孔材料的有序性、稳定性和酸性的影响。同时总结出加深对合成机理的研究,优化合成过程,使用较简单且高效的方法制备具有完全晶化骨架和较高Al含量的介孔Al-SBA-15是未来介孔Al-SBA-15合成研究的新方向。
Doping of Al into the mesoporous SBA-15 material has become one of the most active study objects in the field of mesoporous materials,because it not only holds the features of original structure of mesoporous SBA-15,but also gives the material a new catalytic active site. This paper was aimed to elaborate the research progress in mesoporous Al-SBA-15 material in recent decades,to compare the differences among various synthesis methods,and to discuss the factors,such as the molar ratio of Si/Al,synthetic methods and reaction conditions,which influence the efficiency of the Al atoms incorpoarated into mesoporous framework of SBA-15 and the orders,stability and acidity of mesoporous material. Meanwhile,it is concluded that deepening the study of synthesis mechanism, optimizing the synthetic process,and using a simpler and more efficient method for the preparation of mesoporous Al-SBA -15 with fully crystalline framework and higher Al content,are among new directions of the synthesis of me

[ 可能符合您检索需要的词汇 ]

进入期刊文章
介孔分子筛具有均一可调的介孔孔径、较高的比表面积等一系列优异特性，成为当今国际上研究热点之一。文中从介孔分子筛的性能、合成、改性以及应用等方面进行了综述和展望。结合我们课题组的研究工作，对目前研究较多的介孔分子筛的合成方法，如水热法、室温合成法、微波辐射法等进行了概括，同时还概述了模板剂在分子筛合成中的应用以及以稻壳为原料制备介孔分子筛的研究情况。重点讨论了在提高介孔分子筛酸性和水热稳定性方面的研究工作，为研究以稻壳为硅源来制备介孔分子筛以及对分子筛的改性提供了一些思路与方向。
Mesoporous molecular sieve is an interesting research area because of its excellent properties ,such as adjustable uniform mesoporous pore size and high specific surface area .In this paper ,we introduced the properties ,synthesis ,modification and application of the mesoporous molecular sieve .Base on our research works ,we reviewed the synthesis methods in the present studies ,such as hydrothermal method ,room temperature conversion method and microwave radi-ation method ,etc .Meanwhile ,we overviewed the function and application of template used in the synthesis of molecular sieves and the preparation of mesoporous molecular sieves from rice husk .The research works on the improvements of the acidity and hydrothermal stability of meso-porous molecular sieve were summarized mainly .All the above provided some ideas and direction for the preparation and modification of mesoporous molecular sieves from rice husk .

[ 可能符合您检索需要的词汇 ]

进入期刊文章
掺杂氯盐使介孔氧化铝导电率提高近一个数量级,将掺杂的介孔氧化铝浸渍在水中24h后的导电率仍为纯介孔氧化铝的3~6倍.红外光谱结果显示,氯掺杂改变了表面酸碱活性中心,导致质子更易在介孔氧化铝中发生迁移,从而提高导电性.
The conductivity of mesoporous Al2O3 was improved over one order by doping chloride, and the conductivity of doped sample after immersion in water was still higher than that of pure Al2O3 3~6 times. IR results suggested that the hydrogen bonding between the hydroxyl and surface site became weak with doping chloride, which lead to the easy dissociation of the proton from the surface site and the increase of the conductivity.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
介孔分子筛由于具有较大的比表面积、孔容、孔径等优点使得其在吸附分离等领域得到了广泛的应用。本文综述了介孔分子筛改性的不同方法,包括嵌入法、负载法,以及有机-无机杂化介孔材料的制备等。对介孔分子筛在吸附脱硫方面的最新研究进展进行了总结,包括对燃料油、天然气、煤气中硫化物的吸附脱除,以及H2S、SO2等大气污染物的吸附脱除。同时对介孔分子筛的改性及发展前景进行了展望,合成新型有机-无机杂化介孔材料并将其应用于吸附等领域是未来发展的主要趋势。
Mesoporous silicas have been widely used in the field of adsorption-separation because of their large surface areas,pore volume,diameters,and highly ordered pore structure. In this paper,the modification methods of mesoporous silicas,including incorporation,impregnation,and the synthesis of silica-based mesoporous organic-inorganic hybrid materials,are reviewed. Recent studies on the application of mesoporous silicas in the adsorptive desulfurization of fuel,natural gas,coal gas,H2S, and SO2 are summarized. Meanwhile,the outlook on the modification of mesoporous silicas is proposed. The synthesis of new silica-based mesoporous organic-inorganic hybrid materials and their applications in adsorption areas are in the primary trend.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
CeO2是一种重要而廉价的稀土化合物,广泛应用于催化领域,将其制备成为介孔态材料可以提高其催化反应活性,拓宽其应用范围。阐述了当下使用各种模板法制备介孔CeO2的研究现状,着重关注了CeO2的介孔参数,并展望了模板法合成介孔CeO2的趋势。
Cerium oxide is an important and cheap rare earth compounds,it is widely applied in catalysis,its ca-talysis reactivity can be improved when prepared into mesoporous materials, the scope of application can also be widened. The research progress on preparation of mesoporous cerium oxide via template method was reported,CeO2 mesoporous parameters were focused on mainly,the development trend of synthesis of mesoporous cerium oxide was also been proposed.

[ 可能符合您检索需要的词汇 ]

进入期刊文章
以硅酸钠为硅源，十六烷基三甲基溴化铵（CTAB）为模板剂，合成介孔材料MCM-41．采用两步嫁接法，分别用三甲基氯化硅（TMSCL）和3-氨基三乙氧基硅烷（APTS）对合成的介孔分子筛进行化学修饰，首次将甲基和氨基同时嫁接到介孔材料MCM-41上，得到新型的介孔材料CH3-MCM-41-NH2．利用XRD和FT—IR对合成的新型功能化介孔材料进行表征．
Mesoporous material MCM -41 was prepared with sodium silicate as silicon source and hexadecyl trimethyl ammonium bromide (CTAB) as template.New functional mesoporous CH 3 -MCM-41-NH2 was suc-cessfully synthesized when the groups of methyl -and amino-were first introduced into the mesoporous MCM -41 by modifying with trimethyl chlorosilane ( TMCS) and 3-Aminotriethoxysilane ( ATS) .The prepared materials were characterized by X-ray diffraction ( XRD) and Fourier Transform Infrared Spectrometer ( FT-TR) .

[ 可能符合您检索需要的词汇 ]