The phrase "acknowledge for instance" is not correct in standard written English.
It is typically used when you want to point out a specific example or case to support a statement or argument.
Example: "In discussing the importance of teamwork, we should acknowledge, for instance, the success of our recent project."
Alternatives: "recognize, for example" or "note, such as".
Mr. Gamal has acknowledged, for instance, that he has not raised much of the $100 million needed to build the center.
Mr. Sheekey acknowledged, for instance, that in 2005, the mayor paid $1 million to the Republican Party for services very similar to those promised by Mr. Haggerty in 2009.
Senior executives have acknowledged, for instance, that they erred in statements describing Mr Kelly as an "intelligence source"; in fact, he was not a member of the intelligence services.
As Druett acknowledges, for instance, it's nearly impossible to document the lives of cross-dressing sailors because their stories, as rendered through newspaper clippings, often end in suspiciously convenient love matches with fellow seamen.
It is rarely acknowledged, for instance, that if a Lib-Lab coalition had been formed in May 2010 (a very big if) it would not have had a majority of seats in England.
It's acknowledged, for instance, that this played a big part in the backroom machinations that led to the Iraq war – with Saddam Hussein's ousting seen by Washington hawks as a first step to securing not just energy supplies but billions of dollars for associated industries from privatisation and reconstruction.
Editors of several English newspapers acknowledged, for instance, that they used pictures of British casualties sparingly.
Practical advice was given acknowledging, for instance, that "teachers and other staff may need to overcome their own anxieties and embarrassment".
It has long been acknowledged, for instance, that the British Secret Intelligence Service has compensated for its paltry size -- it has about one-tenth the manpower of the CIA -- by leveraging the reputation of its most famous fictional spy, James Bond.
