Sol-gel synthesis of nano-scale, end-member albite feldspar (NaAlSi3O8)

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:603

Article

Anovitz, L. M.¹  Affolter, A.^1,4  Cheshire, M. C.^1,5  Rondinone, A. J.^2,6  Allard, Lawrence F.³ 

[1] Oak Ridge Natl Lab, Chem Sci Div, MS 6110,POB 2008,Bldg 4100, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci Div, MS 6493,POB 2008,Bldg 8600, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, MS 6064, Oak Ridge, TN 37830 USA

[4] 6003 Lori Anne Dr Spring Hill, Oak Ridge, TN 37174 USA

[5] Chevron Energy Technol Co, 3901 Briarpk Dr, Houston, TX 77042 USA

[6] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, MS K77, Los Alamos, NM 87545 USA

关键词: Feldspar;    Albite;    Sol-gel;    Synthesis;   

DOI  :  10.1016/j.jcis.2021.06.026

来源: Elsevier

【 摘 要 】

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 (NaAlSi3O8) makes up the sodium corner of the feld-spar ternary diagram (KAlSi3O8-NaAlSi3O8-CaAl2Si2O8) 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 syn-thesis 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. (C) 2021 Published by Elsevier Inc.

【 授权许可】

Free