Reference

Ignition of drops of organoboron compounds in air behind the shock wave

Ignition of drops of organoboron compounds in air behind the shock wave. Gel'fand, B. E.; Kalinin, V. N.; Petrunin, A. B.; Stepanov, V. V.; Timofeev, E. I.; Tsyganov, S. A.; Zakharkin, A. I.; Zhigach, A. F. (Inst. Khim. Fiz., Moscow, USSR). Dokl. Akad. Nauk SSSR, 240(3), 627-9 [Phys. Chem.] (Russian) 1978. CODEN: DANKAS. ISSN: 0002-3264. DOCUMENT TYPE: Journal CA Section: 50 (Propellants and Explosives) The ignition of tri-Bu borate [688-74-4], 1-[(triethoxysilyl)methyl]-m-carborane [67298-05-9], 1-[dimethoxymethylsilyl)methyl]-o-carborane [67377-18-8] , and 1-[b-(trimethylsilyl)ethyl]-o-carborane [67298-06-0] in air behind the shock wave was studied. The delay of ignition of the B compd.-air systems at 300-1000 K was smaller than that of CH4-air systems and comparable to that of heptane-air and butane-air systems.

Preparation of sodium borate (20Na2O

Preparation of sodium borate (20Na2O.80B2O3) glasses by sol-gel method. Tohge, N.; Mackenzie, J. D. (Dep. Mater. Sci. Eng., Univ. California, Los Angeles, CA 90024, USA). J. Non-Cryst. Solids, 68(2-3), 411-18 (English) 1984. CODEN: JNCSBJ. ISSN: 0022-3093. DOCUMENT TYPE: Journal CA Section: 57 (Ceramics) Glasses of compn. 20Na2O.80B2O3 were prepd. from NaOCH3 [124-41-4] and B(OBu)3 [688-74-4] by the sol-gel method. The densities and IR spectra of the gels were measured as a function of heat-treatment temp. The gels heat-treated below 450° are very porous and have somewhat different structures from that of the melt-quenched glass with the same chem. compn. The gels were densified completely at 500° to produce a glass having a d. almost the same as that of the melt-quenched one. The IR data showed the formation of 4-coordinated borons in the starting mixed soln. The gelation process and structural development during the heat treatment were discussed on the basis of the results obtained.