麥克默瑞提克(上海)儀器有限公司
已認證
麥克默瑞提克(上海)儀器有限公司
已認證
美國麥克儀器公司作為材料表征行業的領導者,一直致力于為廣大的研發人員提供精確、可靠的精密儀器,以引領行業發展為己任,全力支持中國材料科學的壯大發展。由麥克儀器公司全資支持的、將在下月首次頒發的麥克儀器-中國顆粒學會最佳論文獎為麥克儀器支持中國科學發展的又一力作。也基于此,廣大研發人員選擇麥克儀器,使用麥克儀器,不斷地首選與引進麥克儀器的先進技術為其科學研究助力,使美國麥克儀器公司ASAP 2020全自動比表面與孔隙度分析儀成為行業內被論文引用最多的儀器。我們將繼續努力,攜手中國材料科學研究者為科學技術發展做出更多的貢獻。
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文章摘要:
A major challenge in the implementation of laboratory-designed catalysts is the scale-up into technically relevant forms. Advanced characterization is essential to understand and optimize catalyst assembly and function in industrial reactors. This Article presents an integrated approach to visualizing millimetre-sized extrudates and granules of a hierarchical MFItype zeolite, displaying trimodal networks of micropores (0.56 nm), intracrystalline mesopores (∼10 nm) and macropores(∼200–300 nm). As exemplified for the conversion of methanol to olefins, the hierarchical zeolite yields a superior performance compared to its conventional analogue. The combination of dedicated specimen preparation with state-of-theart optical, X-ray and electron-based microscopic and tomographic techniques proves a powerful methodology to reveal otherwise inaccessible information regarding structural organization over the whole range of length scales. It is expected that these tools will play a crucial role in the rationalization of scale-up principles in catalyst development.
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