Pranav Kherdekar

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Questions related from Pranav Kherdekar

What is the source of basic 'hydroxyl' sites on gamma-alumina surface? Can hydroxyl ions form on its surface with only water present?

Consider an initially non-hydrated gamma-alumina surface. I pass water over the surface hoping it to dissociatively adsorb on the surface giving me hydroxyl radicals adsorbed on alumina surface....

01 April 2019 8,818 2 View

In an industrial scale fixed bed reactor for syngas to methanol conversion, why is the single-pass conversion of CO very low?

In an industrial scale fixed bed reactor for syngas to methanol conversion, why is the single-pass conversion of CO very low (~15-20%), despite a high equilibrium conversion achievable...

17 December 2018 5,189 3 View

Are DPF-like (ceramic monolithic) devices used industrially instead of candle filters for removal of particulate matter from coal-syngas?

Many studies and industries are known to filter coal- syngas by means of assemblies of candle filters. Is it possible to/ Do any systems exist to instead use huge ceramic monolithic devices...

14 November 2018 311 0 View

How to simulate a crystallizer for compounds not supported by the OLI-ELECTROLYTE package in ASPEN HYSYS?

I am trying to simulate a Bisphenol-A crystallization unit in ASPEN HYSYS. I have used NRTL thermodynamic property package for simulating other processes (such as synthesis of the...

11 February 2018 9,522 1 View

How can one account for the 'spark ignition' phenomenon while estimating the laminar flame speed of a pre-mixed air-fuel mixture in CHEMKIN?

In Chemkin "Flame Speed Calculator", to analyze the flame propagation characteristics, we provide an initial temperature and pressure value. But the phenomenon of "spark-ignition" is not at all...

02 August 2017 9,980 1 View