The phonemes of Catalan:
Plosives
/p, b/
/t, d/
/k, g/
Affricates
/tS, dZ/ tx, tg
/ts, dz/ ts, tz
Nasals
/m, n, n_j/ m, n, ny
Fricatives
/f, s, S, z, Z/ f,s, x, z, j also /v/, v in the valencian dialect
Liquida
/l, l_j/ l, l.l; ll
/r, R/
There is a [Catalan Wikipedia].
(Also, we need a good English-language article about Catalan langauge here.)