Effect of Chromium Precursor on the Catalytic Behavior of Chromium Oxide Catalysts in Oxidative Propane and Isobutane Dehydrogenation with Carbon Dioxide
, Vladimir L. Baybursky 1,2, Petr V. Pribytkov 1,2, Elena V. Murashova 1, Konstantin B. Kalmykov 1, Anastasiya A. Shesterkina 1, Gennady I. Kapustin 2, Olga P. Tkachenko 2, Sergey F. Dunaev 1, Leonid M. Kustov 1,2 and Alexander L. Kustov 1,*
Round 1
Reviewer 1 Report
Comments and Suggestions for AuthorsThis manuscript reported the effect of chromium precursor on the catalytic behavior of chromium oxide catalysts in oxidative propane and Isobutane dehydrogenation with CO2. The catalysts were characterized by SEM-EDX, TEM, DRIFT and UV-VIS diffuse reflectance spectroscopies. The content of the manuscript is summative and representative. Overall, this paper is well organized and written. Thus, I recommend the work be published in this journal after "minor revised".
1. The XRD patterns of different catalyst should be provided.
2. The abstract should be refined.
3. The catalytic mechanism should be discussed in detail.
4. There are also some issues with spacing and formatting which are not specifically listed here but need to be carefully addressed.
5. Some unimportant references should be removed, and some recent references about CO2 conversion and utilization should be cited, such as Construction of Cu-Modified gC3N4 nanosheets for photoinduced CO2 reduction to CO and selectivity mechanism insight
6. The XPS should be provided, if possible.
Comments on the Quality of English LanguageThe English could be improved to more clearly express the research.
Author Response
Responses to article review
Manuscript ID catalysts-3370660
Type Article
«Title Effect of Chromium Precursor on the Catalytic Behavior of Chromium Oxide Catalysts in Oxidative Propane and Isobutane Dehydrogenation with Carbon Dioxide»
Authors: M.A. Tedeeva, M.Yu. Mashkin, V.L. Baybursky, P.V. Prybytkov, E.V. Murashova, K. B. Kalmykov, A. A. Shesterkina, G.I. Kapustin, O.P. Tkachenko, S.F. Dunaev, L.M. Kustov, A.L. Kustov.
We thank the reviewers for helpful comments and valuable comments on the structure and content of our manuscript. We revised the manuscript accordingly to your recommendations. All the changes were indicated in the text. The responses are listed below in a point-by-point manner. Please see the attached file.
Author Response File: 
Author Response.pdf
Reviewer 2 Report
Comments and Suggestions for AuthorsThis manuscript reports a study on the effect of various Cr precoursors on the catalytic activity for the ODH of C3H8 and i-C4H10. The catalysts are also characterized by a range of analytic techniques. Both sets of the results are reported in the paper although the linkage between them appears weak. This should be improved. More discussions can be helpful to readers to better understand why the catalytic activity trends for C3H8 and i-C4H10 are different.
A few specific commnets:
(1) The section between L75 and L86 seems irrelevant to the topic, can be removed from Introduction.
(2) N2 adsorption data were presented only for the CrN sample and were not used to explain the cataltyic activity results. What's the purpose of presenting the data then?
(3) Compositional analysis of the samples can be helpful. Does the CrS sample still contain residual sulfur? Will the residual sulfur affect the catalytic performance and the relative ranking for C3H8 and i-C4H10?
(4) L196-198 attribute the high selectivity to C3H6 of the CrB sample at 600C to the high amount of Cr(VI), but this is not clear from the results in Fig. 4. More explanations can be helpful.
(5) Why does CrAc give the highest C3H6 selectivity/yield, but CrS gives the highest i-C4H8 yield? More explainations that link to the properties of the catalysts can be helpful.
(6) The yield of i-C4H8 is linked to the acidity of the catalysts. The characterization results only report the basiciity? Acidity should be reported directly.
(7) The sentence in L235-236 "Bidistilled water was used as a solvent, and ethanol was used for Cr(AcAc)3" needs a clarification.
(8) Please check "Ga" in L268.
(9) A summary/conclusion section can be helpful.
Author Response
Responses to article review
Manuscript ID catalysts-3370660
Type Article
«Title Effect of Chromium Precursor on the Catalytic Behavior of Chromium Oxide Catalysts in Oxidative Propane and Isobutane Dehydrogenation with Carbon Dioxide»
Authors: M.A. Tedeeva, M.Yu. Mashkin, V.L. Baybursky, P.V. Prybytkov, E.V. Murashova, K. B. Kalmykov, A. A. Shesterkina, G.I. Kapustin, O.P. Tkachenko, S.F. Dunaev, L.M. Kustov, A.L. Kustov.
We thank the reviewers for helpful comments and valuable comments on the structure and content of our manuscript. We revised the manuscript accordingly to your recommendations. All the changes were indicated in the text. The responses are listed below in a point-by-point manner.
Please see the attached file.
Author Response File: Author Response.pdf
Round 2
Reviewer 2 Report
Comments and Suggestions for AuthorsThe revision has addressed most of comments that I raised in my previous review. It can be considered for publications.
