Phosphomolybdic acid catalysts tuaj yeem npaj tau los ntawm tsim cov dej sib xyaw ntawm hydrated Phosphomolybdic acid nyob rau hauv ib qho anhydrous alkyl cawvQhov no yog ua raws li los ntawm kev ntxiv ib lub hauv paus rau qhov sib tov thiab evaporating cov sib tov rau hauv daim ntawv. cov hmoov catalyst, thiab tom qab ntawd calcining thiab dehydrating cov hmoov kom yield lub active catalyst.
Koj ua li cas thiaj ua tau cov tshuaj Phosphomolybdic?
Phosphomolybdic Acid (PMA): Dissolve 10 g ntawm phosphomolybdicacid nyob rau hauv 100 mL ntawm kiag li ethanol. Potassium Permanganate: Dissolve 1.5 g ntawm KMnO4, 10 g ntawm K2CO3, thiab 1.25 mL ntawm 10% NaOH hauv 200 mL dej. Vanillin: Dissolve 15 g ntawm vanillin nyob rau hauv 250 mL ntawm ethanol thiab ntxiv 2.5 mL ntawm conc. sulfuric acid.
YYuav ua li cas koj yaj phosphomolybdic acid?
YDissolve
5.0 g hauv 30 mL dej , ua alkaline nrog ammonium hydroxide, thiab ntxiv 0.25 mus rau 0.30 mL dej bromine. Boil rau ob peb feeb, lim, ntxuav lub precipitate ob peb zaug, thiab muab pov tseg cov lim thiab ntxuav.
phosphomolybdic acid siv rau dab tsi?
Phosphomolybdic acid yog siv los ua reagent rau kev txiav txim siab colorimetric ntawm phenothiazine derivativeshauv ntau yam khoom siv tshuaj. Cov reagent oxidizes cov derivative mus rau ib tug cationic dawb radical, uas nws ces tsim ib xim ntsev.
PMA stain yog dab tsi?
Phosphomolybdic Acid (PMA) StainPhosphomolybdic acid stain yog ib qho zoo "universal" stain uas yog qhov haum rau cov kev daws teeb meem qis. Nws yuav stain feem ntau cov pab pawg ua haujlwm, txawm li cas los xij nws tsis paub qhov txawv ntawm pawg ua haujlwm sib txawv raws li cov xim ntawm cov pob ntawm TLC phaj.
