The phrase "a speech devoted to" is correct and usable in written English.
It can be used when referring to a speech that focuses on a specific topic or theme.
Example: "The conference featured a speech devoted to climate change and its impact on global economies."
Alternatives: "a speech focused on" or "a speech centered around".
In a speech devoted to the centrality of human dignity, Francis, 77, declared that the EU had lost its bearings.
Bush, in a speech devoted to climate change, said power stations would need to reduce emission levels to well below previously projected targets.
In a speech devoted to Iran, Mr. Santorum got one of his largest ovations for a call to oppose the "radical environmental movement" from blocking the building of pipelines that he said could make the United States energy independent and keep gas prices down.
At the top of a speech devoted to tax policy, Trump ticked off a series of issues he said are making the recovery more difficult, including that Puerto Rico is an island, that its infrastructure was already in "very, very poor shape" and that the U.S. territory is saddled with "tremendous" debt.
Tom Earnhardt, a public affairs officer at Fort Bragg who participated in the planning for the president's trip, said that from the first meetings with White House officials there was agreement that a hall full of wildly cheering troops would not create the right atmosphere for a speech devoted to policy and strategy.
Mr. Ferrer, in a speech devoted to the transition, suggested yesterday that his own opposition to Mr. Giuliani's request was grounded in principle and that Mr. Green's decision to go along with Mr. Giuliani was a political calculation by a candidate trying not to criticize a popular politician.
Obama hasn't made a single speech devoted to poverty as president, and if you visit barackobama.com these days, you would be hard-pressed to find any reference to the subject whatsoever.
Oddly, though, for all his rhetorical skills, Obama hasn't made a single speech devoted to poverty since he moved into the White House.
Strip away the novelty of a prime ministerial speech devoted to, um, tarmac and what the Tory leader proposes is pretty much what we have heard over and over, from Thatcher onwards.
In a lengthy, unemotional speech devoted to the wide-ranging policies of his Administration, he gave no explanation for his actions, did not mention the impending release of his grand jury testimony, and made no effort to try to redeem himself yet again in front of a sympathetic crowd.
Tony accidentally praises Augusto Pinochet in a one-hour speech devoted to praising Augusto Pinochet.
