Arthur Vasconcelos

7 Questions 11 Answers 0 Followers

Questions related from Arthur Vasconcelos

Is the mechanism of 2-metoxyphenol (guaiacol) oxidation by a plant peroxidase similar to a mechanism by a fungus peroxidase?

I need to explain the mechanism of biotransformation of guaiacol in tetraguaiacol biocatalised by a plant peroxidase and I might know if the pathways of this mechanism differs or not differs from...

28 December 2023 2,777 0 View

Which are the coloured products in esterification reaction?

When I conduce an esterification reaction using oleic acid P.A, occurs a variation in color of final product generated (liquid). Is this color due occurence of some concurrent reactions generating...

17 October 2023 8,411 1 View

What is the pre-treatment of materials with enzyme immobilized for FT-IR analysis?

I have a material supporting a peroxidase enzymes and I wish to collect the infrared spectrum of the complex support-enzyme, but this system is in buffer medium (citrate-phosphate). The technique...

21 November 2022 2,252 2 View

Is safety for zeolite structure integrity grinding the product of synthesis?

After hydrothermal synthesis and Washing/drying step, the zeolite synthesis product may presented as pellets besides powder. The milling of these pellets may cause some damage or changes in...

06 June 2022 9,856 2 View

How can I download PDF database from ICDD ?

If anyone have a reference of website or the PDF archive downloaded to insert in X'pert highscore plus. Please send me by e-mail [email protected]. I appreciate very much. With regards

05 February 2022 1,790 1 View

How to determine the Si/Al ratio of a material using ICP-AES and DRX data?

May I determine the Si/Al ratio if I quantify these elements using ICP AES data from the precursor material and if I start the synthesis and control the cristalographic profile using DRX?

05 October 2020 737 6 View

Why to use nickel crucible for zeolite synthesis?

Some works related to obtain zeolites from natural precursors cite the use of nickel crucible for the fusion process instead the porcelain crucible. Wich differences this will do for synthesis...

05 October 2020 9,888 2 View