18 Questions 27 Answers 0 Followers
Questions related from Vivek Patil
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 3,696 1 View
I must remove (1) steam and (2) dust particles from flue gases. But there is too much pressure drop if I use multiple equipment for both (e.g. a steam condenser/ heat exchanger and cyclone/ ESP/...
12 September 2022 5,299 3 View
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12 September 2022 9,253 3 View
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12 September 2022 2,692 2 View
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 823 0 View
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 4,541 2 View
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 5,174 1 View
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 8,658 2 View
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 3,715 3 View
This is for quantitative 31P (phosphorous) NMR of lignin. I am using Bruker Topsin 4.0.6 for processing. I am visually comparing multiple NMR spectra in one window by plotting them together....
25 September 2019 3,274 2 View
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 9,951 3 View
My question is not specific to any two combination of pure compound and volatile solvents. I saw some research papers using such combination as an internal standard for GC analysis of bio-oil,...
25 June 2019 9,891 6 View
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 2,607 0 View
I know that molecular hydrogen produced from fossil-based resources, such as natural gas/ crude oil is used in Haber process to produce ammonia, which goes to fertilizer applications. Does that...
17 September 2018 5,851 3 View
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 9,392 6 View
Does anyone know any reliable source (research/ news article) that explains the health/environmental hazards/toxicity of transition/noble metal catalysts? It would be great it is something that I...
09 September 2018 3,179 12 View
My experiments lead to milligrams-quantity of these materials and their qualitative properties are important to measure. Is there any method with which I can remove as much quantity of the quartz...
02 August 2018 3,008 4 View
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 5,809 4 View
