{'fraction_non_alphanumeric': 0.027450980392156862, 'fraction_numerical': 0.021568627450980392, 'mean_word_length': 5.003921568627451, 'pattern_counts': {'":': 0, '<': 1, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Asymmetrical double flame spray pyrolysis designed SiO2/Ce0.7Zr0.3O2 for the dry reforming of methane.

Silica formation during flame spray pyrolysis (FSP) synthesis was examined where it was unexpectedly revealed that, at a low precursor concentration (<1.5 M tetraethyl orthosilicate in xylenes), physical characteristics of the silica were contrary to what is typically encountered. Explicitly, on using a 0.5 M tetraethyl orthosilicate precursor, increasing the FSP feed rate provided an increase in the specific surface area from 217 m2/g at 3 mL/min to 363 m2/g at 7 mL/min. The unique silica formation mechanism was then utilised in an asymmetrically variable double FSP (DFSP) system to design SiO2/Ce0.7Zr0.3O2. These engineered materials were then utilised as supports for Ni in the carbon dioxide (dry) reforming of methane. To restrict the silica from coating the particles during DFSP, the intersection distance along the silica flame was tuned from 18.5 to 28.5 cm while the distance along the ceria-zirconia flame was fixed at 5 cm. It was found that at short intersection distances the ceria-zirconia provided sites for silica nucleation and growth resulting in high surface area silica encapsulating the ceria-zirconia. At large intersection distances, encapsulation of the ceria-zirconia by silica was suppressed. An enhanced oxygen storage capacity and basicity along with the small Ni sizes facilitated by the longer intersection distances produced the most selective catalyst for the dry reforming of methane.