The European Central Bank is expected to raise rates by 25 basis points on Thursday, as indicated in its June press conference, despite ongoing concerns over the euro zone's periphery.

European Central Bank

Economists who spoke to CNBC.com shared the consensus view that the ECB would follow through with President Jean-Claude Trichet's use of the code words "strongly vigilant" last month and hike rates by a quarter of a percentage point to 1.50 percent.