Mohamed E. El-Halwagy

5 Questions 8 Answers 0 Followers

Questions related from Mohamed E. El-Halwagy

Which solvent could be used for complete branched Polyethylenimine solubility?

I pursed 100 ml branched Polyethylenimine bottle Mw=60,000 50 gew% aq which solvent could be used for complete solubility? what does "gew% aq" mean? how to prepare a solution with a known...

03 March 2019 5,897 3 View

How to convert heterogeneous sodium carboxylate form to a free carboxylic form?

I am preparing a heterogeneous adsorbent for heavy metal removal. the main active group was the carboxylic group. during preparation, the catalyst was treated with aqueous sodium hydroxide for a...

01 January 2019 1,494 8 View

Preparation of poly(3-aminobenzoic acid)?

I need support in preparing poly(3-aminobenzoic acid). I have come to the traditional method of using hydrochloric acid with ammonium persulfate at low temperature. unfortunately, the yield is...

01 January 1970 9,896 10 View

Determination of copper ions in water [Cu(I and II) (10–100 mg L-1)]

I need technical support regarding the determination of copper ions in water [Cu(I and II) (10–100 mg L-1)]. Please take into consideration the lack of direct measuring devices ICP and atomic...

01 January 1970 6,105 7 View

Does the dye degredation reaction with H2O2 over a heterogeneous catalyst can follow a zero order with respect to dye?

01 January 1970 8,878 4 View