Catalyst Design for Shape Selective Methylation of 2-Methylnaphthalene

2-甲基萘择形甲基化催化剂设计

• 批准号: 06650903
• 负责人: NAMBA Seitaro
• 金额: $ 1.41万
• 依托单位: The Nishi-Tokyo 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: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650903/
• 关键词: Catalysis; Zeolite ZSM-5; Shape Selectivity; Dimethylnaphthalene; Alkylation; Methylnaphthalene; MFIゼオライト; メタロシリケート; 固体酸触媒; 触媒作用; ゼオライト; メチル化

Shape selective alkylation of 2-methylnaphthalene with methanol to produce 2,6-dimethylnaphthalene was studied. Among various zeolites, MFI type zeolites, ZSM-5, exhibited a high selectivity to 2,6-dimethylnaphthalene. Therefore, detailed study on the alkylation over HZSM-5 zeolites and metallosilicates with MFI structure was carried out. The catalysts with MFI structure were modified to vary the acid strength and pore dimension. Moreover, the modification of the catalysts for inactivation of solely external surfaces of zeolite crystallites was performed. A high selectivity for the formation of 2,6-dimethylnaphthalene was achieved on ferrisilicate especially when the external surfaces were selectively poisoned by 2,4-dimethylquinoline. Moreover, in order to prepare a high performance catalysts for selective formation of 2,6-dimethylnaphthalene it is effective to weaken the acid strength keeping the pore dimension of MFI structure constant, or if possible, wider.

研究了2-甲基萘与甲醇择形烷基化合成2，6-二甲基萘的反应条件。在各种沸石中，MFI型沸石ZSM-5对2，6-二甲基萘表现出较高的选择性。为此，本文对具有MFI结构的HZSM-5分子筛和金属硅酸盐的烷基化反应进行了详细的研究。对具有MFI结构的催化剂进行了改性，改变了催化剂的酸强度和孔尺寸。此外，还对沸石微晶外表面失活催化剂进行了改性。当外表面被2，4-二甲基喹啉选择性毒化时，2，6-二甲基萘的生成具有很高的选择性。此外，为了制备高性能的选择性生成2，6-二甲基萘的催化剂，有效地削弱了酸强度，保持MFI结构的孔尺寸恒定，如果可能，保持更宽的孔尺寸。

项目成果

S.Namba: "Shape Selectivity of Zeolites - Toward Catalyst Design-" Shokubai. 37. 606-613 (1995)

S.Namba：“沸石的形状选择性 - 走向催化剂设计 -”触媒。

Jong-HO Kim: "Cause Generation of Para-selectivity of Zeolites with MFI Structure" Sekiyu Gakkaishi. 39. 79-86 (1996)

Jong-HO Kim：“导致具有 MFI 结构的沸石对位选择性的产生”Sekiyu Gakkaishi。

T.Yashima: "Shape Selective Alkylation of Aromatics on Metallosilicates" Acid Base Catalysis. II. 379-389 (1994)

T.Yashima：“金属硅酸盐上芳族化合物的形状选择性烷基化”酸碱催化。

難波 征太郎: "ゼオライト触媒の形状選択性-触媒設計を目指して-" 触媒. 37. 601-613 (1995)

Seitaro Namba：“沸石催化剂的形状选择性 - 催化剂设计” 37. 601-613 (1995)。

T.Kamatsu: "Selective Formation of 2,6-Dimethylnaphthalene from 2-Methylnaphthalene on HZSM-5 and Metallosilicate with MFI Structure" Stud.Surf.Sci.Catal.84. 1821-1828 (1994)

T.Kamatsu：“在 HZSM-5 和具有 MFI 结构的金属硅酸盐上从 2-甲基萘选择性形成 2,6-二甲基萘”Stud.Surf.Sci.Catal.84。