Seyyed Jafar Saghanezhad

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Questions related from Seyyed Jafar Saghanezhad

How can we increse the osmotic pressure of a solution while maintaining the electrical conductivity of the solution?

in other words what kind of salts increase the osmotic pressure with the same salt content. for example 1g of NaCl or 1 gr of Na2SO4 or KCl or ....

26 January 2019 2,795 3 View

If two powder xrd patterns are the same, can we conclude that they are the same compounds?

We have prepared some catalysts with some modifications, but the core structure is the same. we have recorded the Xrd patterns. some of them are the same. It should be mentioned that the melting...

30 May 2017 7,075 8 View

How is it possible to calculate catalyst leaching? is it enough to use gravimetric method?

Catalyst characterization Recyclability Reusability Catalyst leaching How is it possible to calculate catalyst leaching? is it enough to use gravimetric method?

30 December 2015 3,551 3 View

How much conductivity is allowed for deionized water in the laboratory?

We use reverse osmosis for obtaining deionized water. Recently the conductivity of this water has increased to 15 uS/cm. Meanwhile the tap water has the conductivity of 1500 uS/cm.

07 May 2014 5,806 2 View

What is the synthetic procedure for the preparation of 1-allylimidazole?

i have attempted different ways which all were unsuccessful or lead to a pasty substance. I have tried imidazole + NaOH in water enthanol mixture, and also imidazole + NaOH in DMSO. and also ethanol.

17 July 2013 4,610 2 View