4A沸石 - 百度百科
化学式为Na12Al12Si12O48·27H2O或Na12[(AlO2)12(SiO2)12]·27H2O，是由 硅氧 和 铝氧 四面体组成的三维 骨架状结构 化合物，属 立方晶系 ，晶胞中心是一个直径为1.14A空穴，它由一个8元环和6个相类似的空穴连接而成，这种8元环结构形成的自由空穴直径为4.12A，故称为4A沸石 ...
Zeolite - Wikipedia
For example, the major molecular sieves, 3A, 4A and 5A, are all LTA (Linde Type A). Most commercially available natural zeolites are of the MOR, HEU or ANA-types. An example of the notation of the ring structure of zeolite and other silicate materials is …
4A Zeolite: Quality Production and Reliable Delivery - STPP Group
4A zeolite is phosphate-free, and environmentally friendly to surface water. 4A zeolite is relatively cheaper than STPP. 4A zeolite has high adsorptive capacity for liquid components, such as surfactants, which makes it easier to produce concentrated detergents with high active matter content (up to 25%).
Zeolite 4A - TRIGON Chemie
Zeolite 4A: is a synthetic zeolite, activated by a thermal process in order to remove water; of crystallisation. is an inorganic product based on Na and aluminosilicate having a very high porosity.
Preparation, characterization, and performance of 4A zeolite …
2018年10月9日 · In this study, 4A zeolite was prepared from opal waste rock by hydrothermal method and applied in ammonium ion adsorption. To optimize synthesis conditions, the effect of crystallization time (1–8 h), crystallization temperature (65–115°C), Na 2 O/SiO 2 (0.6–2.0), H 2 O/Na 2 O (20–70), and SiO 2 /Al 2 O 3 (1.0–3.5) was investigated.
Improving the efficiency of 4A-zeolite synthesized from kaolin by …
2023年8月2日 · This study focuses on optimizing the CO2 adsorption capacity of 4A-zeolite synthesized from kaolin by employing structural modifications through impregnation with tetraethylenepentamine (TEPA)...
Zeolite 4A: heat capacity and thermodynamic properties
2000年12月1日 · The heat capacity of zeolite 4A (also known as LTA, Linde Type A and sodium zeolite A), in the temperature range from 37 to 311 K, is reported. The heat capacity shows no anomalies in this temperature range.
Zeolite A Type - SpringerLink
2016年1月1日 · Zeolite A, also known as LTA (Linde Type A), belongs to the family of aluminosilicate molecular sieves. It is characterized by the formula | (Na +12 (H 2 O) 27 | 8 [Al 12 Si 12 O 48] 8 which corresponds to its most common hydrated sodium form (International Zeolite Association -IZA).
Zeolite 4A - Molecular Sieve
Molecular Sieve 4A is an alkali metal aluminosilicate; Molecular sieve 4A is the sodium form of the type A crystal structure. Molecular sieve 4A adsorbs molecules with effective diameters small than 4 anstrom (0.4nm) such as water, CO2, H2S, methanol, eth. We're here to help: Easy ways to get the answers you need.
Zeolite 4a | Sigma-Aldrich - MilliporeSigma
Find zeolite 4a and related products for scientific research at MilliporeSigma