Anovitz L M, Affolter A, Cheshire M C, Rondinone A J, Allard Lawrence F
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, MS 6110, P.O. Box 2008, Bldg. 4100, TN 37831, United States.
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, MS 6110, P.O. Box 2008, Bldg. 4100, TN 37831, United States.
J Colloid Interface Sci. 2021 Dec;603:459-467. doi: 10.1016/j.jcis.2021.06.026. Epub 2021 Jun 6.
Feldspars are the most abundant minerals in the Earth's crust, and are also important constituents of many lunar rocks and some stony meteorites. Albite (NaAlSiO) makes up the sodium corner of the feldspar ternary diagram (KAlSiO - NaAlSiO - CaAlSiO) and connects the alkali-feldspar and plagioclase binary joins. Synthesis of albite, however, has long been a problem, even at high temperatures and even at high pressures when dry. In fact, most successful syntheses require the combination of high-pressure, high-temperature, and hydrothermal environments. This paper presents a sol-gel method of albite synthesis that requires hydrothermal processing followed by high-temperature recrystallization, but no high-pressure environments. This has the advantage of allowing synthesis of relatively large amounts of material and controlled elemental substitutions.
长石是地壳中含量最为丰富的矿物，也是许多月球岩石和一些石陨石的重要组成成分。钠长石（NaAlSiO）构成了长石三元相图（KAlSiO - NaAlSiO - CaAlSiO）中的钠端，并连接了碱性长石和斜长石的二元连线。然而，即使在高温以及干燥状态下的高压条件下，钠长石的合成长期以来一直是个难题。实际上，大多数成功的合成需要高压、高温以及水热环境的结合。本文介绍了一种钠长石合成的溶胶-凝胶法，该方法需要水热处理，随后进行高温重结晶，但不需要高压环境。这具有能够合成相对大量的材料以及可控元素替代的优点。
