نتایج جستجو برای: solid superacid

تعداد نتایج: 189428  

Journal: :Chemical communications 2015
Wouter Debrouwer Ruben A J Seigneur Thomas S A Heugebaert Christian V Stevens

A three-step synthesis of benzo[c]thiophenes is presented in which the key transformation is the gold-catalyzed 5-exo-dig migratory cycloisomerization of a diallyl thioacetal. It was shown that a small amount of in situ generated HAuCl4 from AuCl3 is the active catalytic species. A mechanism was proposed.

Journal: :The journal of physical chemistry. B 2007
Yu Zhang Huamin Zhang Xiaobing Zhu Cheng Bi

A self-humidifying membrane based on low-cost sulfonated poly (ether ether ketone) (SPEEK) hybrid with sulfated zirconia (SO4(2-)/ZrO2, SZ)-supported platinum catalyst (Pt-SZ catalyst) was investigated for fuel cell applications. The SZ particle, a solid-state superacid with hygroscopic and high proton conductivity properties, was employed as the catalyst support. The SPEEK/Pt-SZ self-humidifyi...

Journal: :Journal of the Brazilian Chemical Society 2000

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