This research paper presents a detailed review of the recent advances concerned with carrying out efficient solar chemical reactions by reviewing the most recent reactors available in the literature that use solid-gas reactions or pyrolysis processes. Major research groups in solar chemistry design and manufacture a wide range of solar reactor configurations, widths, and sizes, including directly radioactive particles. Solar reactors heat up to 1000℃ and can be utilized to store chemical thermal energy in concentrated solar power facilities (CSP). Reactor efficiency is better in bed reactors notably in rotating pyrolysis, fluidized bed reactors with solid gas, and fixed-bed reactor systems. Finally, their description, schematics, and key performance parameters are presented for chemical reactions.