Albemarle Executive Chairman Mark Rohr to Take Over at Celanese

Celanese Chairman and CEO David N. Weidman will be retiring in April 2012. The company's board of directors has appointed Mark C. Rohr as his successor. Rohr is currently the executive chairman of Albemarle's board. He will step down from that position on Feb. 1.

Weidman joined Celanese in 2000. In 2002 he was named chief operating officer and was named chief executive officer in 2004 following the company's move from Germany to the United States. Weidman led the company through its initial public offering in January 2005 and was elected chairman of the board in 2007.