think this is a Cyperus, possibly either C. diffusus (smaller), or C. alternifolius. They like to keep their feet wet (think they're related to papyrus). the brown tips to the leaves are from a dry atmosphere, they like it humid. Known also as umbrella plant. think it's a grass not a palm
i had one - but didn't keep it wet enough :(
Looks like miniature Papyrus to me. I had both kinds - they are recommended as "bog" plants. I have no bog, and the larger version does very well in a sunny, dry location and is hardy here in zone 7. The smaller version died after the first winter so I think It did need more moisture and is not as hardy. Pretty plant.