SSZ-60: a new large-pore zeolite related to ZSM-23.

SSZ-60 is a new borosilicate zeolite that may be prepared using N-ethyl-N-(2,4,4-trimethylcyclopentyl)pyrrolidinium or N-ethyl-N-(3,3,5-trimethylcyclohexyl)pyrrolidinium as a structure directing agent; the framework of SSZ-60 was determined by the FOCUS Fourier recycling method, its structure refined in space group P21nm and found to possess a one-dimensional channel system with pores delimited by twelve-rings; the topological structure of SSZ-60 may be derived from a sigma-expansion of the framework of ZSM-23 (MTT).