Cheslin Moodley

3 Questions 7 Answers 0 Followers

Questions related from Cheslin Moodley

How do I separate methylglyoxal (pyruvaldehyde) and pyruvic acid using RP-HPLC?

Using a Restek Roc C18 5um column and a mobile phase composed of H3PO4/NaH2PO4 buffer aqueous solution (0.1 M NaH2PO4 acidified by H3PO4 to pH +/-2) and acetonitrile (v:v = 9:1) [flow rate of 0.6...

07 June 2023 1,822 8 View

Why is a powder of Mn(NO3)2/SiO2 turning black in colour after oven drying at 90°C?

5 wt.% of Mn(NO3)2.4H2O was used as a precursor for the wet impregnation synthesis of MnOx/SiO2. After dehydration at 70 °C, a white paste was obtained and thereafter dried in an oven overnight at...

22 November 2022 8,872 3 View

Why is there an absence of peak/s in the NH3-TPD analysis of silica ?

The NH3-TPD of commercial silica (S.A= 223m2/g) has been run on a Micromeritics 2900 AutoChem II Chemisorption Analyser to determine total acidity. However, there was no peak observed post-run....

30 April 2020 2,297 3 View