Born in Tarragona, Catalonia, Palanca was a product of RCD Espanyol's youth academy, playing once for the first team in 2006–07 then spending the following season solely with the reserves.
On 13 December 2008 he made his debut for the main squad, replacing Wesley Sneijder in the first half of a 2–0 away defeat to FC Barcelona.
[5] The following campaign, after the club's relegation, he signed a two-year contract with another side in that league, Elche CF, with Real Madrid having an option to re-buy on any given period during that timeframe.
[6] On 27 January 2015, after one and a half seasons with CD Numancia also in the second tier, Palanca signed with Australian club Adelaide United FC.
[10] He scored his first goals for his hometown team on 9 September in a 2–2 home draw with neighbours Girona FC in the second round of the Copa del Rey, also converting the decisive attempt in the subsequent penalty shootout.