us4702894 (http://l2.espacenet.com/espacenet/viewer?PN=US4702894&CY=gb&LG=en&DB=EPD)
(http://l2.espacenet.com/espacenet/viewer?PN=US4702894&CY=gb&LG=en&DB=EPD)
It's a hydrogen generator which you easily can built yourself. It produces H2 this way: 2Al + 3H2O ---> Al2O3 + 3H2
Is this device practical
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