文章信息/Info

Title:

Crystal Morphology‘s Control of AFI Type Molecular Sieves by Microwave Irradiation

作者:

宋宇; 唐雨微; 董卉; 楊威

大連工業(yè)大學(xué) 紡織與材料學(xué)院

Author(s):

SONG Yu; TANG Yuwei; DONG Hui; YANG Wei

School of Textile and Material Engineering, Dalian Polytechnic University

關(guān)鍵詞:

分子篩; 微波合成; 形貌控制; 微孔化合物

DOI:

10.7502/j.issn.1674-3962.2016.05.06

文獻(xiàn)標(biāo)志碼:

A

摘要:

AFI型分子篩是無機(jī)微孔材料家族中重要的一員，由于其具有較好的選擇性能和結(jié)構(gòu)的多樣化，在催化性能和吸附分離等方面具有良好的應(yīng)用前景。大量的研究表明分子篩的各種性能與分子篩的尺寸和形貌有著直接的聯(lián)系，同時直接影響到其實際應(yīng)用效果。微波合成法具有升溫速度快、加熱均勻、產(chǎn)物粒度分布窄，以及相選擇性、節(jié)能和環(huán)保等特點，因此將微波合成法引入到研究無機(jī)微孔化合物形貌的研究中，將對無機(jī)微孔材料的發(fā)展起到積極地推動作用。本課題組一直從事與分子篩相關(guān)的研究工作，近期在微波輻射條件下，通過改變合成條件成功制備出不同形貌的AFI型分子篩。詳細(xì)闡述了AlPO4-5、SAPO-5、CoAPO-5、FeAPO-5、MnAPO-5、CuAPO-5和MgAPO-5合成條件的改變對產(chǎn)物形貌的影響。

Abstract:

AFI type molecular sieve is an important member of the families of inorganic microporous materials, due to better selectivity properties and structures diversification, it has a good application prospect in the fields of the catalytic properties and adsorption separation, and so on. A large number of studies have shown that it has a direct connection between the sizes, morphologies and the properties of the molecular sieves, at the same time the sizes and morphologies directly affect  application effects of molecular sieves. Microwave synthesis have a series of advantages, for instance: fast heating, heating uniformity, narrow particle size distribution of the product, the characteristics of phase selectivity, energy saving and environmental protection. The microwave synthesis is introduced into the morphologies research of inorganic microporous compounds,as will play an important role. In this paper, AlPO4-5 molecular sieve with different morphologies is successfully prepared under the condition of microwave radiation, in addition, SAPO-5, CoAPO-5, FeAPO-5, MnAPO-5, and MgAPO-5 CuAPO-5 are successfully prepared by the same way. This paper expounds the influence of synthesis condlitions on the products’ morphologies in detail.