Glass-ceramic monoliths with an ultra-low thermal expansion coefficient have been synthesized by the sol-gel technique using metal alkoxides as starting materials and dimethyl formamide as a drying control chemical additive. The ternary gels: $Li_2Ocdot Al_2O_3cdot 2, 4 or $6SiO_2$ were obtained by hydrolysis and polycondensation reactions of metal alkoxides of silicon, aluminum and lithium. To produce cylindrical crack-free gel monoliths, excess water was used to the starting solutions and drying rates were controlled precisely to prevent cracking. In conversion process ,${eta}$-eucryptite, $Li_2Ocdot Al_2O_3cdot 3SiO_2$ and P-spodumene with ,${eta}$-quartz solid solution phase were obtained by heating at the range of 750 ~$1000^{circ}C$. Above $800^{circ}C$, the ,${eta}$-spodumene phase increased while ,${eta}$-eucryptite phase decreased. The thermal expansion coefficient of the crystallized specimens were -15~ $+5{ imes}{10^{-7}}/{circ}C$ over the temperature range from room temperature to $600^{circ}C$.