Catalyze dehydration of formic acid
Activated alumina, silica, thoriated silica gel, phosphorus pentoxide-silica gel, aluminum phosphate, titanium dioxide
Catalytic Dehydration of Formic Acid, E. G. Graeber and D. S. Cryder
Industrial &amp; Engineering Chemistry 1935 27 (7), 828-831, DOI: 10.1021/ie50307a019
Mechanism of dehydration decomposition of formic acid over alumina and silica. Adsorption measurements during the catalytic reaction, Kenzo Fukuda, Yuko Noto, Takaharu Onishi and  Kenzi Tamaru, Trans. Faraday Soc., 1967,63, 3072-3080, DOI: 10.1039/TF9676303072

Mixed titanium-vanadium oxide
Sadovskaya, Ekaterina &amp; Chesalov, Yuriy &amp; Goncharov, V. &amp; Sobolev, Vladimir &amp; Andrushkevich, Tamara. (2017). Formic acid decomposition over V-Ti oxide catalyst: Mechanism and kinetics. Molecular Catalysis. 430. 52-64. 10.1016/j.molcata.2016.12.010

Various homogenous transition metal catalysts
Homogeneous Catalytic Dehydrogenation of Formic Acid: Progress Towards a Hydrogen-Based Economy, Gábor Laurenczy, Paul J. Dyson, J. Braz. Chem. Soc. vol.25 no.12 São Paulo Dec. 2014, DOI: 10.5935/0103-5053.20140235

Monoclinic bismuth chromate hydroxide proto-catalyst, $\ce{m-Bi(OH)CrO4}$
Two-step catalytic dehydrogenation of formic acid to CO2 via formaldehyde, Viasus et. al., International Journal of Hydrogen Energy, Volume 44, Issue 3, January 2019, Pages 1534-1543, DOI: 10.1016/j.ijhydene.2018.11.178