霍林斯基矿床沸石物理化学性质的研究

Q3 Pharmacology, Toxicology and Pharmaceutics
В. Бондарев, Т. Жилякова, Н. Б. Демина, К. К. Размахнин, Alexander V. Bondarev, Elena T. Zhilyakova, Natalya B. Demina, Konstantin K. Razmakhnin
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引用次数: 2

摘要

介绍俄罗斯的矿产资源基地拥有满足制药要求的有效吸附物质。沸石是有前途的矿物原料,由于其多孔结构,它结合了吸附剂和“分子筛”的特性。除了肠道吸附方向外,天然沸石还是宏观和微量元素的来源,这决定了它们作为生物活性食品添加剂的用途。目标霍林斯基矿床沸石物理化学性质的研究。材料和方法。以霍林斯基矿床的沸石矿物原料为研究对象。使用Leica DM直接显微镜(Microsystems,德国)进行光学显微镜检查。使用电子扫描显微镜JSM-5300(日本Jeol有限公司)进行能量分散分析。根据该方法使用ASAP 2400装置(Micromeritics,USA)研究吸附特性。利用Java Applet Jmol程序构建了沸石的虚拟三维分子模型。结果与讨论。研究了沸石的物理化学性质。已经确定,沸石相的颗粒在形态上具有5-30微米的尺寸,它们均匀分布在位点的整个区域上,并且代表第一结构水平。尺寸为5-6微米的沸石相的颗粒由于斜发沸石晶体、微裂纹和微土而形成第二结构级别。基于能量分散光谱分析,发现元素K、Na的含量增加,这表明阳离子交换络合物的碱性组成。所研究的沸石样品具有微孔(体积为0.0031 cm3/g)、中孔(体积为0.0675 cm3/g)和29.1840 m2/g的比表面积。建立了霍林斯基矿床沸石的虚拟三维分子模型。根据分子模型,Kholinsky矿床沸石的吸附特性为:比表面积-1096.31m2/g(1916.34m2/cm3),球形分子在孔中的平均吸附直径为5.97A.结论。对沸石的吸附特性的分析表明:孔占整个沸石体积的一半,可用于吸附水和低分子物质。三个相互垂直的方向上的每个孔隙都通过“窗口”与相邻的孔隙连通。形成了一个由晶内孔隙和空腔组成的系统,在其中容易发生适当大小的分子的闭塞和吸附。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of the Physical and Chemical Characteristics of the Zeolites of the Kholinsky Deposit
Introduction. The mineral resource base of Russia has effective sorption substances that meet pharmaceutical requirements. Promising mineral raw materials are Zeolites, which combine the properties of an adsorbent and a "molecular sieve" due to the porous structure. In addition to the enterosorption direction, natural Zeolites are a source of macro-and microelements, which determines their use as biologically active food additives.Aim. Study of the physical and chemical characteristics of the Zeolites of the Kholinsky deposit.Materials and methods. The zeolite mineral raw materials of the Kholinsky deposit were used as objects of research. Optical microscopy was performed using a Leica DM direct microscope (Microsystems, Germany). Energy dispersion analysis was performed using an electron scanning microscope JSM-5300 (Jeol Ltd, Japan). The sorption characteristics were studied using the ASAP 2400 device (Micromeritics, USA) according to the method. The construction of a virtual three-dimensional molecular model of the Zeolite was carried out using the program Java Applet Jmol.Results and discussion. The physicochemical properties of Zeolites are investigated. It is established that morphologically the particles of the zeolite phase have a size of 5-30 microns, they are evenly distributed over the entire area of the site and represent the first structural level. Particles of the zeolite phase with a size of 5-6 microns form the second structural level due to Clinoptilolite crystals, microcracks and microgeodes. Based on the energy-dispersion spectral analysis, an increased content of the elements K, Na was revealed, which indicates the alkaline composition of the cation exchange complex. The studied Zeolite samples have micropores (volume 0.0031 cm3/g), mesopores (volume 0.0675 cm3/g), and a specific surface area of 29.1840 m2/g. A virtual three-dimensional molecular model of the Zeolite of the Kholinsky deposit has been developed. According to the molecular model, the sorption characteristics of the Kholinsky deposit Zeolite were: specific surface area - 1096.31 m2/g (1916.34 m2/cm3), the average diameter of the spherical molecule for adsorption in the pores is 5.97 A.Conclusion. The analysis of the sorption characteristics of the Zeolite revealed the following features: the pores occupy half the volume of the entire Zeolite, which are available for the sorption of water and low-molecular substances. Each pore in three mutually perpendicular directions communicates with the neighboring ones through "windows". A system of intracrystalline pores and cavities is formed, in which the occlusion and adsorption of molecules of the appropriate size easily occurs.
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来源期刊
Drug Development and Registration
Drug Development and Registration Pharmacology, Toxicology and Pharmaceutics-Pharmaceutical Science
CiteScore
1.20
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61
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