Filtration Combustion of Silicon Tetrafluoride and Calcium Hydride for the Preparation of Monosilane

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We have studied reaction between silicon tetrafluoride and calcium hydride in a vertical flow reactor,
which proceeds as combustion in filtration mode. The principal kinetic characteristics of the reaction
between SiF4 and CaH2 in a counterpropagating wave have been determined: reaction order n = 1, rate constant
k = 0.38 ± 0.05 s–1, and activation energy Ea = 17 ± 2 kJ/mol.

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