Answers required to cryptic clues

[JayMBee]

Can anyone help with the answers to the following cryptic clues:
1. Jupiter's moon is a no-hoper unfortunately when it comes to help in passing through a membrane (9) ??N???O??
2. Dress wrapped around the first Open University tree (7) S???A??
3. Overshadowing the commander of the zealous religious band in the meadow (9) ??C???I??
4.Ecclesiastical embellishment found on one forward Benedictine's sweetheart (5,4) O???N ???E
5. Fills up with inhabitants again with unfortunate lepers who go to the gym for nothing (9) R???????S
6. Great hilarity after taking an upset spirit causes squinting (7) N??????

[JMR27]

1. ionophore - one of Jupiter's satellites is Io + anagram of no-hoper

[Ont-ice]

4. On (i=one) on (Dom=Benedictine) e
Onion Dome ?

[hammersgirl]

5 repeoples - lepers around pe +o

[JayMBee]

Thanks for those 3 answers which were given which has now helped me complete the others:

2. SAOUARI
3. OCCULTING
6. GLEEING - realised I had the wrong first letter! Gleeing is Scottish dialect for squinting.

Thanks again.