We are very grateful for your letter and the reviewers’ comments on our manuscript FUPROC-D-16-00285. According the comments, we carefully revised the manuscript and all the revisions were marked in blue color in the revised manuscript. In this cover letter, on behave of the authors, I would like to answer the reviewer’s comments point by point. General comments: In my opinion, this article lacks a proper justification on how the study fits in 'aims and scope' of the journal. The subject relation to fuels is relative. The paper could be more appropriate for other journals focused on chemical engineering. Answer: Thank you for the comments. On the home page of Fuel Processing Technology, the aims and scope are described as following. “Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products.” In fact, carbon dioxide (CO2) is not only a greenhouse gas but also the most abundant C1 resource on the earth. The conversion of CO2 into styrene carbonate fits the topics of “converting renewable resources to value-added chemicals”. So we think our work fits in 'aims and scope' of the journal well.