Charles J. DiBona, executive vice president of the American Petroleum Institute will succeed Frank N. Ikard upon his retirement on January 1, 1979, it was announced last week

DiBona was appointed special consultant to the President and deputy director of the White House's Energy Policy Office in 1973. As a special consultant to the president, he was responsible to preparing studies related to the administration's energy policy. In 1974 he was named to the newly created position of executive vice president and chief operating officer of the American Petroleum Institute.

Henry E. Catto, Jr., former chief of protocol for the White House and the Department of State, has been elected to the board of directors of Union First National Bank of Washington.

Catto is currently a government consultant president of the Catto Foundation and a director of the Houston Post Co. From 1976 to 1977 he served as the U.S. Permanent Representative to the European Office of the United Nations. Catto is also a member of the Foreign Relations and the Center for Inter-American Relations.

Richard Kronheim, president of Milton S. Kronheim Co., was elected to the board of directors of Madison National Bank at the bank's annual shareholders meeting last week.

Samuel E. Bonsack, president of the Chesapeake and Potomac Telephone Co., has been elected to the board of directors of the Crown Central Petroleum Corp. of Baltimore.

Bonsack joined the Bell System in 1940 and was elected vice president, human resources development, of AT&T in New York in 1973. He assumed the presidency of C&P Telephone in 1974.

The new chairman of the board of the Maryland Chamber of Commerce is John E. Meyers who succeeds Gordon Yates.

Meyers is manager for market development at Koppes Co. Inc. and served as vice president of the chamber prior to his election. He has been a member of the board of the Maryland chamber since 1976 and has also served in executive positions with the Anne Arundel Trade Council and the Baltimore County Chamber of Commerce.

Clifford J. Ehrlich has been promoted to vice president, personnel and organization development, for Marriott Corp.

Ehrlich will be responsible for employe relations, employment, equal opportunity, organization development, compensation and benefits, and loss prevention. He joined Marriott in 1973 as director of manpower resources and most recently served as vice president, employee relations.

Samuel J. DeBlasis has been appointed to the board of directors of Peoples Security Bank of Maryland.

DeBlasis was engaged in general trial practice until 1969 when he was namedjudge to the circuit court of Prince George's County.