Recycle of discharged sodium borate fuel
First Claim
1. A process for producing trialkyl borates of the formula B(OR)3, wherein R is a straight- or branched-alkyl consisting of 1 to 6 carbon atoms, comprising reacting an alkali metal borate with carbon dioxide and a lower alcohol thereby producing trialkyl borate, alkali metal bicarbonate and water, said reaction being carried out in the presence of a porous particulate water-absorbing material to absorb said water as it forms.
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Abstract
The present invention relates to an improvement in the recovery of boron values from a mixture of alkali metal borate and alkali metal hydroxide representing discharged fuel from a hydrogen generator apparatus. The mixture is reacted with carbon dioxide and a lower alcohol to form trialkyl borate, alkali bicarbonate and water. A porous water-absorbing material is added to the reaction mixture to absorb water as it forms thereby improving the yield of trialkyl borate. The trialkyl borate is converted to alkali borohydride that is used in the fuel.
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18 Claims
- 1. A process for producing trialkyl borates of the formula B(OR)3, wherein R is a straight- or branched-alkyl consisting of 1 to 6 carbon atoms, comprising reacting an alkali metal borate with carbon dioxide and a lower alcohol thereby producing trialkyl borate, alkali metal bicarbonate and water, said reaction being carried out in the presence of a porous particulate water-absorbing material to absorb said water as it forms.
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8. A process for producing trialkyl borates of the formula B(OR)3, wherein R is a straight- or branched-alkyl consisting of 1 to 6 carbon atoms, from a solution of alkali metal borate and alkali metal hydroxide comprising:
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a. drying said solution to form a particulate mixture of alkali metal borate and alkali metal hydroxide; and
b. reacting said particulate mixture with carbon dioxide and a lower alcohol thereby producing trialkyl borate, alkali metal bicarbonate and water, said reaction being carried out in the presence of a porous particulate water-absorbing material to absorb water as it forms. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification