Or

Figure 74. Molecular structure of ErAl3(OR)12.

Figure 75. Commerical (a) and sol-gel (b) processed wash coat. Reprinted with permission from [256], C. K. Narula, Mater. Res. Soc. Symp. Proc. 271, 181 (1992). © 1992, Materials Research Society.

keep the neodymium alumínate centers effectively isolated (Scheme 32).

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