Membranas de PVA e sílica para aplicação em célula a combustível de alimentação direta de álcool

[摘要] PVA/silica membranes were synthesized by the sol-gel process under acidic conditions. Tetraethoxysilane (TEOS) was used as precursor with concentration between 5 and 30% in two distinct systems. One system was used as control, which contained only PVA

[学科分类] 化学工程（综合）