Energy Transfer has a lot of potential catalysts ahead.Energy Transfer (ET -1.39%) had a relatively quiet first half of the year. The master limited partnership (MLP) didn't make an acquisition or approve a major growth project. That's likely why its unit price has slumped nearly 10% this year.While the MLP had a lackluster first half, its prospects appear brighter for the second half. Second-half catalysts abound for Energy TransferThis year will be a more transitional period for Energy Transfer. The midst ...