Vivek Patil

10 Questions 14 Answers 0 Followers

Questions related from Vivek Patil

What scrubbing solutions to use for CO, NOx, and HCs?

I struggle to find liquid scrubbing agents that can absorb carbon monoxide, NOx (such as NO2), and hydrocarbons (such as VOCs) in a wet scrubber. Can you help?

23 November 2022 3,606 1 View

How to calculate LEL/ HEL at higher temperatures under inert conditions?

I am looking for a way to calculate the lower/ higher explosive limits of hydrocarbon fuels at temperatures in the range of 300-600 deg. C under inert conditions (maintained by continuously...

29 August 2022 736 0 View

How to prevent leaks in Swagelok fittings?

I am carrying out a liquefaction reaction inside a 2.5mL volume reactor made of Swagelok fittings (one SS 3/4" STRAIGHT UNION with two SS 3/4" PLUGS FOR FITTING). After adding the substrate...

12 August 2020 4,369 2 View

How to prevent lignin condensation during biomass fractionation?

I am fractionating poplar in 2-methyl tetrahydrofuran at 80°C with HCl as a catalyst, and then extracting the lignin by precipitating the solution with NaHCO3 and filtration. But the lignin that...

11 August 2020 5,043 1 View

Is there any way to check if my combination of chemical reagents will be safe?

I am trying to do some reactions involving reagents and solvents and moderate temperatures. I wanted to know if the chemicals I have selected are safe to use under those conditions. Is there any...

10 February 2020 8,577 2 View

What can be the reason for only the aliphatic carboxylic acids, ketones and esters being produced from Organosolv lignin depolymerization?

I am extracting lignin from woody biomass and depolymerizing it at 300C for 20 minutes in an organic solvent with a noble metal catalyst. However, I don't see the phenolic monomers that are...

05 November 2019 3,653 3 View

How to avoid N-containing compounds that arise due to pyridine used in the BSTFA derivatization?

I am using BSTFA to derivatize my samples before GC-MS. This procedure requires the use of pyridine as a catalyst for derivatization. However, this leads to nitrogenated compounds in the final...

16 September 2019 9,888 3 View

Where to find HSQC library for lignin?

I am analyzing lignin using 1H-13C 2D HSQC NMR spectra. However, I am unable to find any library that I can use to assign peaks according to lignin structural groups. Where can I find one? Thanks!

18 April 2019 2,520 0 View

How can I analyze the type of lignin?

I have an unknown lignin sample and I want to know what type it is (i.e. alkaline/ dealkaline/ soda/ protobind/ Kraft/ black liquor/ steam explosion lignin). It is definitely not organosolv, as it...

12 September 2018 9,304 6 View

How to dissolve red mud in nitric acid?

I am trying to do ICP-MS analysis of red mud. However, it is not completely soluble in nitric acid (68-72% v/v). I want to know how can I do it without changing the type of acid. Does more...

09 May 2018 5,728 4 View