Two unusual materials with unusual names. I show how to make "dry" water and propane gas hydrate, which looks like ice and is flammable.
Dry water
http://www.diva-portal.org/smash/get/diva2:1024928/FULLTEXT02.pdf
Propane clathrate
https://sci-hub.tw/10.1021/jp3035049
Propane hydrate formation
https://sci-hub.tw/10.1021/ie0207764
Methane storage in hydrates
https://sci-hub.tw/10.1021/ja8048173
Propane hydrate:
https://ps.uci.edu/scholar/sites/default/files/making_a_propane_clathrate_hydrate_1.pdf
https://www.netl.doe.gov/research/oil-and-gas/project-summaries/completed-env/fwp-feab112
Propane vapor pressure:
https://www.engineeringtoolbox.com/docs/documents/1020/propane_C3H8_vapour_pressure.pdf
Fumed hydrophobic silica on eBay:
https://www.ebay.com/itm/Hydrophobic-Fumed-Silica-Powder-2-Qt-64-oz-volume/123100048097
https://www.patreon.com/AppliedScience