PANAMA CITY, May 2 (Reuters) - The European Union hopes to pass the sixth round of sanctions against Russia at the next meeting of the EU Foreign Affairs Council, the bloc's chief diplomat said on Monday.

Josep Borrell told a news conference in Panama City, where he is on an official visit, the bloc hopes to curb Russia's energy exports as part of its efforts to sanction Moscow over its invasion of Ukraine.

The European Commission, the executive branch of the union, is expected to propose the package of EU sanctions this week, including a potential embargo on buying Russian oil - a measure that would deprive Moscow of a large revenue stream, but that has so far divided EU countries.

Borrell, who chairs the Foreign Affairs Council meetings, said he hopes the EU will be able to take "measures to significantly limit these imports" but conceded so far there is no agreement from all the members.

"But I am confident that, at least with regard to oil imports, this agreement will be possible between now and the next Council meeting," he added.

The Council has meetings scheduled for May 10 and May 16 later this month.