"keen commitment" is correct and usable in written English.
You can use the phrase to describe someone who is passionate and dedicated to a certain task, project, or job. For example: "John has a keen commitment to helping others, which is evident in his volunteer work."
A lawyer by training, her intelligence was keen, her commitment to health care reform and poverty unwavering.
He was loved and respected by family and friends for his integrity, keen intellect, loyalty, generosity and tenacious commitment to social and economic justice.
Cover-ups and conspiracies are familiar Warshawski territory, along with keen, fiery social commitment.
Active with reunions, fundraising campaigns, the Stanford Alumni Association's Board of Directors, the Athletics Board, and the Stanford Associates Board of Governors, Bill is known for his keen insights, incredible commitment, influential voice, and deep sense of community.
After four months of stoic struggle, Giancarlo succumbed to the cancer that cut short a promising academic career and a life enlightened by keen intelligence, deep commitment to human relationships, and an insatiable desire to learn, understand, and share.
Great for those single, with no commitments, keen to explore the city and what it offers.
The interviewees are generally keen on family commitments toward their children and parents, which can generate instrumental and social gratification; moreover, the purchase and use of material goods and services for family members aim mainly at fulfilling family commitments rather than the display of social status.
Mr. Singer embodied the best qualities of the legal profession and a keen mind, compassion and commitment.
We shall miss his wise counsel, keen intellect, and unsurpassed commitment to science for the benefit of the public.
