Is it reasonable for catalyst activity to increase during cycles of reuse test?

Amal Abdelhaleem @Amal_Abdelhaleem

08 August 2016 0 5K Report

Dear All

What is the reason for increasing the catalyst activity during cycles of reuse test.

Regards,

Badges
Science topic

More Amal Abdelhaleem's questions See All

What is the possible mechanism for decay of organic pollutants under sole PMS/dark process?

Dear All Please, I have an inquiry concerning PMS/dark process for degradation of organic pollutants. I noticed that the PMS/dark process can work for degradation of my pollutant at specific pH...

03 April 2018 8,581 13 View

What is the possible mechanism for PMS activation under dark with NaoH at pH=10?

Dear All I found that my pollutant can be degraded at pH=10 (pH adjusted by NaOH) under PMS/dark process. Please, what are the possible reasons to justify this phenomenon. Apart from base...

03 April 2018 6,348 4 View

Are there any compounds that can cause activation of sole H2O2 under visible light?

Dear All Please, are there any compounds that cause activation of sole H2O2 under visible light?

10 November 2017 6,801 2 View

What is the reason for the low activity of Fe(III) impregnated TiO2 compared to sole TiO2 under visible light?

Dear All Please, What is the reason for the low activity of Fe(III) impregnated TiO2 compared to sole TiO2 under visible light. Although the Fe(III) impregnated TiO2 led to a high shift in the...

09 October 2017 3,443 0 View

Why the acid is added during preparation of Fe-doped TiO2 using impregnation method?

Dear All Please, what is the reason behind the addition of acid during the preparation of Fe-doped TiO2 using impregnation method? I did not add acid during preparation, but the catalyst changes...

07 August 2017 2,121 6 View

What is the reason for activation of metal free catalysts in the presence of Peroxymonosulfate at alkaline pH 9.3?

Dear All What are the possible reasons for activation of metal free catalysts in the presence of PMS at alkaline pH 9.3. Although the catalyst will be negatively charged and the pollutant is...

02 March 2017 9,107 5 View

How to synthesize MnFe2O4/N doped TiO2 using sonochemical method?

Dear All Please, Can you provide me with a good reference for preparation of MnFe2O4(core)/N doped TiO2 (shell) using sonochemical method. I bought MnFe2O4 as a commercial material (60 nm) and i...

11 December 2016 9,132 0 View

How to synthesize MnFe2O4/N doped TiO2 Core shell using sol gel method?

Dear All Please, Can you provide me with a good reference for preparation of MnFe2O4/N doped TiO2 Core shell using sol gel method. Regards,

10 November 2016 6,077 0 View

Can I measure sulfate radicals using dimethyl sulfoxide ?

Dear All I want to measure sulfate radicals concentration using dimethyl sulfoxide. Please, can you provide me with a reference for measurement of sulfate radicals using dimethylsulfoxide. Regards,

10 November 2016 431 5 View

What is the concentration of salisylic acid for hydroxyl radicals measurement?

Dear All Please, i want to measure hydroxyl radicals generated during photocatalytic reaction using salicylic acid. Please, what is the suitable concentration of salisylic or it depends on the...

09 October 2016 4,421 1 View

What is the reason for current dropping in OER , LSV curve?

I tried four trials of the same Copper Phosphides sample in Alkaline medium ( 0.5M KOH) with Hg/HgO reference electrode and Pt as counter electrode. I used 0.001 V/s scan rate for first three...

10 August 2024 3,628 1 View

What may be the reasons for failures of Tube toi Tube Sheet Joints in Boiler Drum ?

We have observed that tube to tube sheet joint leaked in our boiler and needs to overcome same by knowing the root cause.

08 August 2024 3,160 0 View

Why does my protein refolded to beta sheet during thermal denaturation analysis?

Hi! So i attempted to understand a novel protein behavior towards heat application by analyzing its secondary structure change. I subjected the protein to a thermal denaturation analysis using...

06 August 2024 1,987 3 View

Need heterogeneous catalysts calcined before reduction?

Metal-containing heterogeneous catalysts often need to be calcined before reduction, so what are some examples of catalysts that perform better without calcination? What is the reason and how many...

05 August 2024 909 2 View

What is the problem with these tissue culture plants?

All plants are green but some of these plants becomes yellow. I did not found any reason. Please help me to find out the real problem.

01 August 2024 588 4 View

I have calcined my catalysts without flowing air from the compressed air cylinder will there be any problem with my reaction if i use that catalysts?

FYI Catalyst is MFI zeolite Si/Al = 140,25.40.11.5,15 I am using this catalyst to study methanol to DME conversion

25 July 2024 2,486 2 View

Reason for discontinuities in my Band structure?

Hey All! I am wondering what might be wrong with my band structure. I did the calculations using VASP and plotted the results using Origin. Although I have tried changing various input...

25 July 2024 2,918 11 View

Is it fare for editors of reputed Journals to put on hold manuscripts more than six months without review updates, Are they harassing researchers?

It is being seen that Editors of some reputed Journals are putting on hold the manuscripts and not updating review states even passing more than six months from submission. Researchers are...

24 July 2024 8,595 2 View

Is it possible to manufacture polypropylene sheets using a biaxial process?

I know that films and other low-thickness laminated products are produced using biaxial orientation, but is there something similar for sheets with a thickness of around 6 mm? Or are they...

21 July 2024 1,559 1 View

Has anyone tried freeze flow samples in -80C freezer or liquid nitrogen before processing?

Our lab has some radioactive cell samples that need to be kept frozen for at least 30 days before flow analysis. For some reason, the samples stored in liquid nitrogen did not perform as well as...

15 July 2024 9,975 1 View