Synthesis of metallotetraphenyl-porphyrin in the presence of zeolite
โ Scribed by S. Nakagaki; A.S. Mangrich; C.R. Xavier; A.M. Machado
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 87 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0162-0134
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## ลฝ . Resorcinol can be produced in high yields starting from meta-phenylenediamine MPDA in the presence of homoge-ลฝ . neous mineral acids. The synthesis in the presence of alumino-silicates e.g., zeolites offers a solution to the extremely ลฝ . corrosive properties of the mineral acids at reactio
Pure-phase ferrierite (FER) zeolite has been synthesized in the presence of small amounts of nonionic surfactants, Tween 20 and Tween 80. The input SiO 2 /Al 2 O 3 molar ratio has been varied over a range of 25 to 150. The results confirm that a small amount of pyrrolidine acts as a template and is