ROHS directive and electric vehicles?

In message , dated Wed, 2 Aug 2006, snipped-for-privacy@eagle.ca writes

I think that may be a little confusing.

Fabric softener? (;-)

-- OOO - Own Opinions Only. Try

John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

B is Boron, O is Oxygen...What is R?

In message , dated Wed, 2 Aug 2006, Richard Henry writes

Any univalent base. I said it was confusing. It's a sophisticated way of formulating the generic orthoborate, a salt of orthoboric acid H3BO3.

Does it do anything useful ?

Graham

According to the post that started this sub-thread, you can mix it with water and get hydrogen gas.

I wonder what a chunk of plain boron would look like, or would it immediately start reacting with the air?

Thanks! Rich

Ok - obviously not that useful at all then !

Graham

No, that's plain boron. In an orthoborate, each boron already has all the oxygen it can take.

Ignition temperature is ~1,500 Celsius. At 1,000 C it will sit in air all day.

It also, as mentioned, burns in steam. The heat of that burning is of course much less, but even so, the ignition temperature is less, ~800 C.

--- G. R. L. Cowan, former hydrogen fan "Boron: A Better Energy Carrier than Hydrogen?"

Well, this is nagging at me:

---------------- Subject: Re: ROHS directive and electric vehicles? From: "CWatters" Newsgroups: sci.electronics.misc,sci.electronics.design Message-ID: Date: Tue, 1 Aug 2006 21:25:32 +0100

New Scientist this past week has an article about making hydrogen from water "as you go" using Boron. If I remember correctly 45Kg of water and

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Which is where my original question came from - do you just dump som granulated boron into a water tank and it liberates hydrogen?

And, of course, we gat back to, where does the energy come from in the first place?

Or is this guy blowing smoke up my ears?

Thanks, Rich

Well, as a first guess, how much energy is it going to take to turn the waste boron chemicals back into the original one( maybe what has been delivered plus a generous amount of waste heat and effort????). There aint no such thing as a free lunch.(borrowed from Robert Heinlein,"The moon is a harsh mistress")

That's boron element, not an orthoborate. But you get a reaction only at a high temperature, with steam under pressure. Once started, the reaction can maintain the required temperature.

It is often seen as an inert brown powder, but it can also appear as black shiny fragments, very similar to silicon in appearance.

Europe seems to be backing out of the hydrogen hype. Someone important must have pushed a few buttons on a pocket calculator.

robert

The calculations speak for themselves !

Apparently the Governator's really into the idea though ( speaks volumes ) .

Graham

No the full article explains...

Heat the water to 800 add the Boron and you get Boron Oxide and Hydrogen. Daimler Chrysler built a concept car that used this reaction some time ago. In did 130Kph and 500K ragge.

The problem was the infrastructure needed to support the car. This time the proposal is different.. Heat the Boron Oxide waste with Magnesium to recover the Boron and seperate the resulting Magnesium Oxide using electrolysis (solar generated electricity). Getting the infrastructure in place would take government action that I can't see happening. Personally I think that someone will crack the battery problem before that happens.

About as good as? Hell, they have about twice the power density of NiCad; volumetric or mass.

Try this: