Following the designed synthesis of mesoporous silica materials, such as MCM-41 and MCM-48 with small pore sizes (2-4 nm), [1] which are templated by quaternary ammonium cationic surfactants with different chain lengths, numerous ordered large-pore (8-30 nm) mesoporous silicas, such as SBA-15 and SBA-16, have been synthesized by using blockcopolymer nonionic surfactants as templates. Recently, a series of ordered rodlike mesoporous carbon materials have been synthesized by using mesoporous silica materials with a large range of pore diameters, such as MCM-48 and SBA-15, as hard templates. [3] Furthermore, it has been reported that new two-dimensional hexagonal mesoporous carbon materials with connected tubelike pores can be synthesized with large-pore mesoporous silica SBA-15. [4] The mesoporous material, with a bicontinuous cubic structure of Ia3 Β―d symmetry, is one of the most interesting materials among the varied mesoporous silica materials reported to date. The independent and intricately interwoven three-dimensional networks of mesoporous channels are much more attractive for use as adsorbents and catalyst supports than the two-dimensional channels of hexagonal mesoporous silica MCM-41 and SBA-15. In spite of the recent discovery of large-pore cubic Ia3 Β―d mesoporous silica, [5a-c] the hydrothermal method for synthesizing a highly ordered material has not been fully developed. Therefore, the devel-[