A series of poly(fluoroalkoxy thiophenes) have been prepared by electrochemical and chemical polymerization respectively. The substitution of thiophene by poly
The oxidative dehydrogenation of ethane has been studied with vari-ous lanthanum oxide catalysts.This kind of catalysts is active and selective inoxidative dehy
It is very important to predict the molecular weight of a compound from its EI massspectrum, because molecular weight is one of the most important information