22 Questions 46 Answers 0 Followers
Questions related from Antonio Salituro
Hello, I have got an MSDS indicating the STEL of a compound and I'd like to know what the relevant TWA would be. Is there a general ratio which roughly links the two parameters (regardless of the...
01 January 2020 4,523 4 View
Hello, I am after a paper reporting the X-ray diffraction pattern of silicon, possibly including all the diffraction peak positions. Thanks, Antonio
10 October 2019 9,725 4 View
Hello All, Which methodology should I follow to measure water activity of pharmaceutical materials? I am aware that there are two USP procedures in this regard, chapter 922 and 1112. Which of...
05 May 2019 4,256 5 View
Hello All, I am trying to reproduce an XRD method. I know scan range, scan speed and step size. How do I work out the time per step? Thanks, Antonio
06 June 2018 373 8 View
I am just looking for references on water vapour pressures for the saturated solutions of the following salts: LiBr LiCl MgCl2 Mg(NO3)2 NaCl KCl KNO3 I have found the following reference...
03 March 2018 8,436 2 View
I would like to fin out more information about which type of material (ideally pharmaceutical compounds) could be suitable to perform both qualitative and quantitative Powder X-ray diffraction...
01 January 2018 2,641 10 View
Hi, I have got some DSC data related to the heat flow in mW (milliWatt I presume?) measured during adsorption/desorption of CO2 onto/from an activated carbon. I'm getting some inconsistent...
06 June 2015 3,067 5 View
Hi All, I'd need to remove inorganic fractions (especially Ca-based ones) from my carbons. What's the typical procedure to apply in order to do that? I'd like to know the main conditions (acid...
02 February 2015 9,288 4 View
I'd need to purchase some activated carbons. Ideally, I would need two different type of products, a carbon having high micropore volume (d
07 July 2014 2,361 2 View
I'm planning to go to this year's edition in San Diego. It looks like a big event. My project is about CO2 capture so it kind of fits quite well in there. However, it would be nice to get some...
07 July 2014 2,728 1 View
I've seen from the literature that XRF gives results in terms of oxides (e.g. CaO). Is this correct? What's the difference in terms of chemical composition results between XRF, XRD and EDX?
06 June 2014 773 15 View
I need to wash some KOH-activated carbons with HCl. From literature different procedures are reported. Usually the concentration is between 1 and 5 M but just a few studies (almost none of them...
06 June 2014 2,178 5 View
I need to investigate the basic/acid character of my activated carbons. Which procedure/technique should I follow in order to do that? I have been told to apply Boehm's titrations. Is it the most...
05 May 2014 6,151 9 View
I'm looking for some good conferences (possibly the best one) to apply for about CO2 capture systems in 2015 (or any earlier as long as the papers submission is still open). Could you please...
05 May 2014 7,774 0 View
I'm doing some Boehm's titration's to work out the amount of oxygen basic groups present on my carbons. So I've added 50 ml of HCl to 1 g of carbon. I've done this in duplicate and I'm going to...
05 May 2014 3,086 3 View
I know that XPS could be a good route to see which kind of functional (oxygen or nitrogen based) groups are onto the material structure. Am I right? However, any other suggestions will be really...
03 March 2014 2,377 45 View
I managed to find a direct reference to biomass only for the determination of the ash content (E1755-01, http://www.astm.org/Standards/E1755.htm). Should I refer to the standards used for wood as...
02 February 2014 3,236 10 View
According to the ASTM D2867-09 1 g of activated carbon should be heated up to ca. 150 deg C for 3 h. However in most of the papers I checked out the usual conditions reported are 105 degrees C for...
02 February 2014 4,703 5 View
I measured the CO2 adsorption isotherms and I need to convert the maximum capacity (isotherm ordinate) expressed as cm3 CO2 (gas)/g adsorbent in cm3 CO2 (liq)/g adsorbent. I suppose this is the...
01 January 2014 418 0 View
Are the following details correct? sample mass = 1g 105 C for 2-3 h (moisture) 550 C for 6 h (ashes) 950 C for 7 min (volatiles) Also, are the previous steps supposed to be applied as a sequence?
01 January 2014 3,025 0 View
I should use TGA by applying the same temperature programme employed for biomass but I would like to know if microalgae decomposition (especially at high temperature, 200-900) could give some...
01 January 2014 7,221 3 View
Should I wash the sample through the filter after the wet impregnation? Also, is it supposed to use hot, cold and/or distilled water? Finally, is there a specific amount of water/no. of rinses...
01 January 2014 8,130 8 View
