The phrase "a special acknowledgement" is correct and usable in written English.
It can be used when you want to highlight or give recognition to someone or something in a unique or significant way.
Example: "In my speech, I would like to give a special acknowledgement to the volunteers who worked tirelessly to make this event a success."
Alternatives: "a unique recognition" or "a notable mention".
The Metropolitan Opera's revival of Mozart's Cosi fan tutte brought with it a special acknowledgement for Vilar in the Playbill, for his "generous and deeply appreciated gift" in helping put the production together.
We would like to thank our colleagues at KACST, Oxford University and the Rutherford Appleton Laboratory ( RAL ) and St. Catherine's College who have worked so hard and skilfully in the organisation of the Forum, and we give a special acknowledgement to Drs Andrew Taylor (Director, RAL), Vladimir Kuznetsov, Martin Jones and Matthew Lodge and to Saud Aldrees, Saeed Al-Shiri and Mrs Linda Webb.
A special acknowledgement to those that help festivals and events run smoothly.
A special acknowledgement to Ms. Maria Francisca Mots, Ms. Yolanda Aviles, Ms. Patricia Giron, and American School of Tegucigalpa (AST) as a whole for making this seminar possible.
A special acknowledgement for the dedication of the fieldworkers who carried out all the surveys, Monica Odhiambo for data entry, Christopher Nyundo and Lazarus Mramba for all the help with the map and R plots.
A special acknowledgement is extended to the Medical Research Collaborating Center of Seoul National University Bundang Hospital for its time and commitment.
But Roo! — who need not have brought her exclamation point with her — a 24" mixed breed with a dynamite charge, is given separate and special acknowledgement as best of the mutts.
Multiculturalism, the view that cultures, races, and ethnicities, particularly those of minority groups, deserve special acknowledgement of their differences within a dominant political culture.
In his lecture, Schrock first acknowledged his family, colleagues, and students, giving his wife special acknowledgement.
The captain of the one of the UK teams, the Handcross Rebels, played his first tournament in 1952 and received special acknowledgement for his continued play during last year's event.
Special acknowledgement to Stephanie Hernandez, student at Florida State University, Bachelor of Science, Marketing, Communications, who researched and co-authored this opinion piece.
