Four kinds of aluminum silicate solid acid with different compositions as catalysts for the synthesis of methylal from methanol and formaldehyde solution were prepared in different processes.

• 采用不同制备方法制备了四种不同组成的硅酸铝固体酸催化剂,在间歇操作方式下,通过改变催化剂用量、反应温度、原料甲醇和甲醛的摩尔配比以及反应原料中甲醛初浓度。