[Gasification] Gasification Digest, Vol 12, Issue 10

[Dick Glick]

Hello --

Lignin -- for the most part in native state, does not have uncovered 
phenols -- phenol -- in simplest form is an alcohol function on a benzene 
ring -- lignins phenols, are for the most part, reacted with methanol to 
form a methy ether -- thermal decomposition of this component of lignin --  
provides most of the wood alcohol -- methanol.

Best, Dick

----- Original Message ----- 
From: "David" <info at customcharcoal.com>
To: <gasification at listserv.repp.org>
Sent: Sunday, June 10, 2007 2:22 PM
Subject: Re: [Gasification] Gasification Digest, Vol 12, Issue 10


> Thomas Reed mentioned that Lignins are mostly benzene ring oligimers 
> rather
> than sugar oligimers.  Lignins actually are phenolics with highly
> substituted benzene rings crosslinked by oxygen bonding to make the 
> lignols.
> The phenols are what make the tar, and thus the tars have antimicrobial,
> antifungal activity as wood preservatives.
> Destruction of the phenols is the key to low tar gas.
>
> David Green
> "Rootless half diminished"
> "A voicing that resolves two ways"
>
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