Direct and Selective Gas-phase Hydration of Lower Olefin to Alcohol and Ketone

低级烯烃直接选择性气相水合制醇和酮

• 批准号: 62550594
• 负责人: IWAMOTO Masakazu
• 金额: $ 1.22万
• 依托单位: Miyazaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1987
• 资助国家: 日本
• 起止时间: 1987 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550594/
• 关键词: Direct hydration; Proton zeolite; Vapor phase; Liquid phase; Lower olefin; Alcohol; 接触水和; 脱水素反応; 超安定Y型ゼオライト; 気相系; 気相直接水和; ゼオライト; アルコール合成; ケトン合成

Direct hydration of lower olefins on proton-exchanged zeolite catalysts has been studied in vapor or liquid phase and the following have been observed.1. In gas-phase hydration of propylene, l-btene, and iso-butene the reactivity of iso-butene was the highest. The yield of tert-butanol amounted to ca. 20% at 383 K. The zeolites with SIO_2/Al_2O_3 = 15-20 were the most active for the hydration. On the other hands, hydrative dehydrogenation of propylene or l-butene to give acetone or methyl ethyl ketone was found to proceed on ultra-stable Y-type zeolites(HUSY). Effort has been devoted to develop more active catalyst for the ketone formation and CAO/HUSY was concluded to be the best at the present.2. Liquid-phase hydration of iso-butene has been studied under both atmospheric pressure and high pressure. The activity and selectivity of the proton-zeolites were very high. For example, the conversion and selectivity to tert-butanol were 50% and 95%, respectively, on H-ZSM-5 at 383 K, 1.5 atm, and 30 min. The catalytic activity of the zeolites was dependent on the aluminum content; the zeolites with less amount of al showed higher activity.The results strongly suggest first that the proton-zeolites are better catalysts that other catalysts such as P_2O_5/SiO_2 and ion exchange resin, secondly than one might be able to get selectively tert-butanol in hydration of mixture of propylene and butenes.

已经在蒸气或液相研究了质子交换沸石催化剂上的下烯烃直接水合，并且已经观察到以下。1。在丙烯，L-苯甲酸和异丁烯的气相水合中，异丁烯的反应性最高。 TERT丁醇的产量达到Ca。在383 K处20％。具有SIO_2/AL_2O_3 = 15-20的沸石是水合的最活跃。另一方面，发现丙烯或l-丁烯的水分脱氢为丙酮或甲基酮酮的脱氢作用，可在超稳的Y型沸石（Husy）上进行。努力致力于为酮组开发更活跃的催化剂，而CAO/Husy得出的是最好的。2。在大气压和高压下，已经研究了异丁烯的液相水合。质子 - 沸石的活性和选择性非常高。例如，在383 K，1.5 atm和30分钟的H-ZSM-5上，对TERT丁醇的转化和选择性分别为50％和95％。沸石的催化活性取决于铝含量。结果较少的沸石表现出较高的活性。首先，强烈表明质子 - 沸石是更好的催化剂，即其他催化剂，例如P_2O_5/SIO_2和离子交换树脂，其次，其次是可以选择性地在丙烯和丙烯酸酯和丁烯烯混合的丁醇中选择性地TERT叔丁醇。

项目成果

M.Iwamoto: "Acid Base Catalysis". (1989)

M.Iwamoto：“酸碱催化”。

Yasutake TERAOKA: "Control of Gas Adsorbability of Zeolites by Surface Fixation of silanes." Nippon Kagaku Kaishi. (1989)

Yasutake TERAOKA：“通过硅烷表面固定控制沸石的气体吸附性。”

岩本正和: 日本化学会誌.

岩本正和：日本化学会杂志。

岩本正和: 触媒. 30. 84-87 (1988)

岩本正和：催化剂。30。84-87（1988）

Masakazu IWAMOTO: "Development of New Catalytic Reactions or New Catalysts Using Zeolites." Shokubai(Catalyst). 30. 84-87 (1988)

Masakazu IWAMOTO：“使用沸石开发新的催化反应或新的催化剂。”