Komateedi N Rao

6 Questions 28 Answers 0 Followers

Questions related from Komateedi N Rao

What it meant by "Active Pd surface density (micro-mole per gram)"?

I have seen this "active Pd surface density (micro-mole per gram)" title for X-axis in an article, no idea the technique used. I believe it would be chemisorption technique. Density means...

23 March 2015 1,339 5 View

How can I explain the increase in BETSA of a zeolite sample after calcination from 650C to 800C?

Zeolite showed about 600m2/g at 650C and 850 m2/g after cacine to 800C. There was small amount continuous weight loss noticed in TGA from 600 to 800C. Please explain or share your understanding.

06 November 2014 9,962 9 View

Is there any correlation between Pd crystallite size from XRD and Pd particle size from CO chemisorption?

Pd crystallite size calculated by scherrer equation using high intense plane. Where In CO chemisorption, amount CO adsorbed (Pd:CO is 1) used to calculate the M-surface area and avg. particle...

19 August 2014 2,712 11 View

What is relationship between viscosity and adhesion on a monolith substrate?

How can we tune the viscosity for better adhesion on cardiolite substrate? The particle size D90 12micron and pH is acidic (3-5). catalyst slurry is Pd/Al2O3 with about 40% solid content. How can...

03 June 2014 7,609 4 View

How to improve activity at Low Temp? (Means when reaction under kinetic control)?

Background: commercial TWC catalysts system with PGM, Ce-Zr, Al2O3 etc Target reaction HC-light off (HC means most likely C8 to C5)

21 April 2014 2,120 7 View

Rh/Al2O3 catalysts behavior at high temperature, TWC condition (Lean and Rich)?

When Rh/Al2O3 is heated under air it makes rhodium-aluminate type solid solution. Literature says it is reversible and it would be more easily reversible under H2. When it is used as TWC...

05 December 2013 8,795 0 View