Roman Kubrin

6 Questions 168 Answers 0 Followers

Questions related from Roman Kubrin

How can one fully dissolve zirconium oxynitrate in water?

Can anyone give advice on the best practice of dissolving zirconium oxynitrate (ZrO(NO3)2*xH2O) in water? This salt is known to be well soluble but the sample we have from Alfa Aesar does not...

26 November 2014 8,116 25 View

What is the highest possible temperature of anatase to rutile transformation of titanium dioxide?

Can one postpone the anatase-to-rutile transformation to higher temperatures or completely avoid it under any certain circumstances?

17 October 2014 3,487 14 View

"Operational" pH in organic solvents - can anyone help?

Could anybody suggest some good literature references on the concept of "operational pH" in non-aqueous media possibly including a discussion of justified or not justified utilization of...

04 November 2013 1,399 6 View

Measuring the surface charge/electrostatic potential of a solid surface in water - can anyone help?

Could anyone share their experience on applicable methods and best practices? We perform zeta-potential measurements on powders, but how can we find out at least the sign of the charge on the...

04 November 2013 9,060 7 View

What could destabilize colloidal particles of SiO2 in ethanol?

We buy monodisperse colloidal particles as an aqueous dispersion. In some experiments an ethanol-based dispersion is required. Usually, re-dispersion is easy, and particles retain their stability,...

31 October 2013 3,389 11 View

Why do hydrated nitrate salts purchased from different suppliers behave differently while dissolving in ethanol?

We tried to dissolve yttrium nitrate hydrates in ethanol and discovered that their solubility varies depending on the source, in spite of nominally the same chemical composition. Usually given as...

21 October 2013 1,037 2 View