tag:blogger.com,1999:blog-6589381127632649854.post3247622629625117065..comments2024-01-31T11:12:05.462+02:00Comments on Whisky Science: SulphurTeemu Strengellhttp://www.blogger.com/profile/16883970632607009000noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-6589381127632649854.post-29165228130410659752017-12-17T19:47:43.913+02:002017-12-17T19:47:43.913+02:00I think we need the chemical expertise of Henric M...I think we need the chemical expertise of Henric Molin from Spirit of Hven Backafallsbyn - he is a master distiller and master chemist!<br />David Goldsmithhttps://www.blogger.com/profile/01556939144192952081noreply@blogger.comtag:blogger.com,1999:blog-6589381127632649854.post-28525641245064742322017-09-05T17:37:55.380+03:002017-09-05T17:37:55.380+03:00I think he is saying CuO. Cu(Copper) doesn't ...I think he is saying CuO. Cu(Copper) doesn't react with alcohol, but it and be oxidized by oxygen and form CuO. CuO react with alcohol by heat and resulting in acetaldehyde. And by the way, Copper do react with sulfur.<br /><br /><br />2Cu + O2 =HEAT= 2CuO<br /><br />CH3CH2OH + CuO =HEAT= CH3CHO + Cu + H2O<br /><br />[Cu(NH3)4]2+ + H2S + 2H2O = CuS↓ + 2NH3·H2O + 2NH4+<br />H2SAnonymoushttps://www.blogger.com/profile/10594105272277255787noreply@blogger.comtag:blogger.com,1999:blog-6589381127632649854.post-19193100903133981582014-01-23T11:29:17.358+02:002014-01-23T11:29:17.358+02:00Thanks for this very informative post. But there w...Thanks for this very informative post. But there was a little mistake where it says "The copper used in the distillation stills reduces the sulphury content of the whisky most likely by acting as a catalyst in processes resulting in insoluble copper sulphates."<br />As catalyst copper speeds up any of those reactions, but doesn't get changed itself. That means, none of these reactions can result in copper ions which are necessary for copper sulphates. Secondly, copper sulfates are highly soluble in water what results in a very deep blue and or turquoise color of the liquid.<br /><br />Nevertheless thanks for the work! Philiphttp://shop.eyeforspirits.com/noreply@blogger.comtag:blogger.com,1999:blog-6589381127632649854.post-81915646640420616702014-01-09T09:34:34.701+02:002014-01-09T09:34:34.701+02:00Txh for feeding us more informativ and helpful stu...Txh for feeding us more informativ and helpful stuff!<br /><br />Björn ScholzAnonymousnoreply@blogger.com