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Forum index » Science and Technology » Chem
why microwave can speed up organic reactions
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jackchen1021@hotmail.com
science forum beginner


Joined: 05 Jan 2006
Posts: 10

PostPosted: Mon Apr 03, 2006 3:59 am    Post subject: why microwave can speed up organic reactions Reply with quote

i wonder the reason.
i would be very grateful if someone can give some fundmental papers or
books?
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Nicholas Sherlock
science forum beginner


Joined: 23 Jun 2005
Posts: 8

PostPosted: Mon Apr 03, 2006 5:34 am    Post subject: Re: why microwave can speed up organic reactions Reply with quote

jackchen1021@hotmail.com wrote:
Quote:
i wonder the reason.
i would be very grateful if someone can give some fundmental papers or
books?

Well, for a start, microwaves will heat the target, which will speed up
reactions.

Cheers,
Nicholas Sherlock

--
http://www.sherlocksoftware.org
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jackchen1021@hotmail.com
science forum beginner


Joined: 05 Jan 2006
Posts: 10

PostPosted: Mon Apr 03, 2006 8:26 am    Post subject: Re: why microwave can speed up organic reactions Reply with quote

what is the difference between haeting by fire and microwave
Nicholas Sherlock wrote:
Quote:
jackchen1021@hotmail.com wrote:
i wonder the reason.
i would be very grateful if someone can give some fundmental papers or
books?

Well, for a start, microwaves will heat the target, which will speed up
reactions.

Cheers,
Nicholas Sherlock

--
http://www.sherlocksoftware.org
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Wouter van Marle
science forum beginner


Joined: 24 Feb 2006
Posts: 9

PostPosted: Mon Apr 03, 2006 2:47 pm    Post subject: Re: why microwave can speed up organic reactions Reply with quote

On Mon, 2006-04-03 at 01:26 -0700, jackchen1021@hotmail.com wrote:
Quote:
what is the difference between haeting by fire and microwave

A microwave (that is: microwaves with the frequency used in a microwave
oven) acts directly on the molecules - it's known to heat water
particularly. Now forgive me the details, I don't know, but as I
understand it has a frequency that matches the O--H bonds in water. And
these bonds are very often present in organic compounds - and these
bonds are involved in many organic reactions. So I can imagine that a
microwave will act on those bonds, maybe activating them a bit, thus
lowering the extra energy needed (usually kinetic: molecules hitting
each other hard enough so to say) to reach the activation energy for a
reaction to take place.

OK let the beating begin Smile As I'm sure the above is not complete.

Wouter.


Quote:
Nicholas Sherlock wrote:
jackchen1021@hotmail.com wrote:
i wonder the reason.
i would be very grateful if someone can give some fundmental papers or
books?

Well, for a start, microwaves will heat the target, which will speed up
reactions.

Cheers,
Nicholas Sherlock

--
http://www.sherlocksoftware.org
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raconte@hotmail.com
science forum addict


Joined: 03 Nov 2005
Posts: 72

PostPosted: Tue Apr 04, 2006 2:26 am    Post subject: Re: why microwave can speed up organic reactions Reply with quote

A number of researchers are working on this particular subject. Here's
a link to a pager with peer reviewed references.

http://www.organic-chemistry.org/Highlights/microwave.shtm
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