Yes and no.
Yes, the WS-X45-SUP6-E has two 10Gb ports and yes WS-X4606-X2-E has 6 10Gb ports. But the question is this, why bother if you each slot supports up to 24Gb half-duplex?
If you want to use 10Gb, consider using the 6500. The 6500 has 40Gb per slot, full-duplex capability. It would be suited if you partner a 6500E chassis with a Sup720 plus either 6704 or 6708.
Cisco Catalyst 6500 Series10 Gigabit Ethernet Modules Data Sheet
http://www.cisco.com/en/US/customer/solutions/collateral/ns340/ns517/ns224/ns668/net_business_benefit0900aecd805348f3.html
I hope this helps. Please don't forget to rate useful posts. Thanks.