Zahra Gholami

9 Questions 11 Answers 0 Followers

Questions related from Zahra Gholami

Is it possible to have only 2D (G') band in the Raman spectra without G and D bands?

I have Co/Al2O3 catalysts and carbon is deposited on the surface by decomposition of light hydrocarbon on the surface of catalysts, therefore the catalysts are containing cobalt carbides and some...

03 March 2022 6,347 5 View

What is the best method for separation of solid carbon in the Boudouard reaction?

I would like to know what is the best and more economic method for the separation and collection of formed solid carbon in the Boudouard reaction (2CO (g) --> CO2 (g) + C (s))? Is it any...

30 March 2021 8,095 1 View

What is the most accurate and fast method for measuring the methanol content of formaldehyde solution (formalin)?

I would like to know what is the most accurate and fast method for measuring the methanol content of formaldehyde solution (formalin)? Usually, it can be determined indirectly, based on the...

07 August 2019 3,763 3 View

What could be the reason for the reduced reaction time in the preparation of Melamine formaldehyde (MF)?

In normal procedure of MF preparation, the complete procedure needs ~ 3.5-4 h. I want to know why recently the reaction times for both first and second step decreased to 0.5 h (totally 1 h)? we...

17 September 2015 2,521 4 View

How can measure dye intensity or dye concentration in a real wastewater?

How can I measure dye intensity or dye concentration in a real wastewater? The real wastewater is a combination of different types of dye and other contaminant. I use an adsorbent for dye removal,...

19 November 2014 5,408 16 View

Can anyone help me to improve the following method for purification of acetylene using H2SO4 and NaOH

Acetylene can be produced from the reaction of CaC2 and H2SO4: CaC2(s) + H2O ---> C2H2 (g) + Ca(OH)2 Then, in the next step H2SO4 is used for the purification of acetylene to around 99%. I know...

21 October 2014 1,911 3 View

Is anyone an expert in Urea-formaldehyde resin, powder and adhesive?

Looking for consultant expert in production and formulation of different types of urea-formaldehyde resins and powder adhesive. Please contact me if you are expert and interested in working as a...

14 August 2014 7,383 3 View

How can retain the viscosity of Urea-Formaldehyde resin during the storage at temperature above 30 C?

It was observed that the viscosity of the resins changed and increased during the transportation in the storage tank, especially when the temperature in above 30 C. I want to know that is it any...

12 August 2014 4,108 6 View

What is the method for the reaction between Chitosan and Oxamide?

Oxamide used for cross-linking the Chitosan. Considering that Oxamide has 2 Amine groups and Chitosan also has amin groups as well. Is it possible to use Oxamide alone as a cross-linker agent? If...

02 February 2014 5,836 1 View